Answer:
the number of people in a town has increased by 25% in the past 5 years.
Explanation:
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What is classification? Why is it necessary to classify animals and plants?
Answer:
Explanation:
Scientists use Taxonomy, the science of classifying living things, in order to make sense of biodiversity and how living things are related. For example, the classification of species is important in light of a changing environment because it helps scientists keep track of endangered species and what new species were formed because of the environmental change.
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A. dark brown sea lions absorb too much heat from the sun during the day
B. dark brown sea lions blend in with the color of rocks and escape predators
C. light brown sea lions’ fish prey are attracted to the light color of their fur coat
D. light brown sea lions are able to compete with other organisms for resources
Answer:
B. dark brown sea lions blend in with the color of rocks and escape predators
Explanation:
The lighter sea lion population is going down while the darker sea lion population is going up. This means that dark brown sea lions have some kind of natural advantage over light brown sea lions.
From what sources did water arrive in Earth’s atmosphere?
However, in Earths First Billion years and over the past 4.5 billion years, the main source of water was from comets. We know that comets consist chiefly of chemical compounds that are either gases or liquids at earth-surface conditions: methane is one common component of comets and water is another.
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The primary function of the lymphatic system is The primary function of the lymphatic system is the production and distribution of plasma proteins. the transport of hormones. the production and maturation of leukocytes. circulation of nutrients and dissolved gases. defending the body against both external and internal threats.
Answer:
The primary function of the lymphatic system is defending the body against both external and internal threats.
Explanation:
The set of tissues and organs that participate in the immune response is known as the lymphatic system. Its main functions are to maintain the volume of blood and participate in the defense of the organism. It is made up of organs, vessels, nodes and lymphatic tissue. This system fulfills three basic functions: Defense: in the lymph nodes, the lymphocytes reproduce to respond to antigens; fat absorption: most of the fats are absorbed by the lymphatic system and subsequently transported to the blood and capillary exchange: it recovers substances that the blood flow has lost in the capillary exchange.
The principal function of the lymphatic system is to remove strange or damaging substances from tissues and eliminate them. The correct option is defending the body against both external and internal threats.
------------------------------
Among other functions of the lymphatic system, its principal one is the removal of damaged cells, cancer cells, and protection of the body against the virus, bacteria, and fungi that might affect it.
The lymphatic system remove these elements from the tissues for their elimination.
All these strange microorganisms and waste substances get filtrated in the lymphatic ganglia.
Ganglia are small organs located all along with the net of lymphatic vessels, that function as lymph accumulation centers.
Lymph passes through these organs and gets filtrated and purified of waste substances.
Inside each ganglion, the lymphocytes T and lymphocytes B help the organism to fight these infections.
B cells produce antibodies that impede infection propagation by trapping the microorganisms and destroying them.
Most lymphatic ganglia are grouped near the neck, underarm, and groin.
They are also grouped in the chest, abdomen, and pelvis, where they filter blood.
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Which is most likely a source of air pollution?
Answer:
CFC's
Explanation:
How are gymnosperms in category gnetophyta usually pollinated?
A. by wind
B. by hand
C. by insects
D. by water
Answer:
by insects
Explanation:
differentiate between kidneys and lungs
Kidneys are used to excrete urine and toxic wastes. They are very essential for keeping the body clean. Usually it excretes urea, sodium and some salts which are considered as waste in the body.
Lungs are used to breathe in and out air. It helps us to stay alive. We breathe in oxygen rich air and breathe out foul carbon dioxide air.
compounds are made up of a single kind of molecule true or false.
It is most likely hopefully false
how does the energy of the reactants and products differ between an energy absorbing reaction and an energy releasing reaction
The mass of the products is larger than the concentration of the reactants in an energy absorption process.
The power of the reaction mixture is larger than the radiation of the outputs in an energy-releasing process.
As substances disrupt bonds, energy released, and then when outputs make new bonds, release energy.
Exothermic processes release energy, whereas endothermic reactions consume it. There is no general change in the quantity of energy throughout a chemical process, whether it collects or releases it.
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How do mutations affect the production of proteins in our bodies?
Answer:
By changing a gene's instructions for making a protein, a mutation can cause the protein to malfunction or to be missing entirely. When a mutation alters a protein that plays a critical role in the body, it can disrupt normal development or cause a medical condition.The century cactus flowers every 100 years. A similar and nearby cactus flowers every 50 years. If the 50-year-cactus pollen has the correct characteristics to fertilize the century cactus, which reproductive barrier will most likely be working against that possibility
Answer:
Temporal isolation
Explanation:
Temporal isolation, a type of reproductive barrier caused by variations in the timing of mating receptivity, activity, or fertility, prohibits interbreeding between different but closely related species.
What is the temporal barrier in reproductive isolation?In biology, temporal isolation is a form of reproductive isolation mechanism that prevents members of closely related species from mating and creating hybrid offspring.
Temporal isolation refers to the situation where two or more species reproduce at various periods. For instance, three different types of orchids live in the same rain forest.
This mechanism arises from differences in the timing of crucial reproductive events.
Therefore, Temporal isolation reproductive barrier will most likely be working against that possibility.
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through what are larger molecules are formed?
Answer:
Through combination of each monomer using covalent bonds.
Explanation:
Most macrmolecules are made from single subunits or building blocks called monomers combine with each other using covalent bonds to form larger molecules known as polymers. In doing so, monomers release water molecules as byproducts.
Is there just one universal scientific method?
Answer:
There is no such unique standard method—scientific progress requires many methods—but students in introductory science courses are taught that `The Scientific Method' is a straightforward procedure, involving testing hypotheses derived from theories in order to test those theories.
Explanation:
Give examples of types of pollution and the effects on water quality (examples: sedimentation, stormwater runoff, naturally and human induced occurrences of arsenic in groundwater)
Answer:
Sewage, oil, pesticides and fertilizers affect water quality.
Explanation:
There are three types of pollution i. e. air pollution, soil pollution and water pollution. Smoke and smog are present in the air is the example of air pollution, waste product, using of pesticide and industrial dumping are the example of soil pollution and chemicals in water due to runoff of fertilizer, sewage and oil are the main agents of water pollution. These three types of pollution adversely affected the water quality. Water quality will be affected when the fertilizer or pesticides runoff from land to water bodies. Sewage and oil also lowers the quality of water.
Recreate the sequence that occurs in the carbon cycle beginning with carbon dioxide gas.
combustion, atmosphere, soil organic matter, fossil fuel, plant biomass.
The four phases of the carbon cycle, which is vitally important for both plants and animals, are as follows:
What is carbon cycle?A sequence of environmental processes known as the "carbon cycle" involve the absorption of carbon dioxide into living tissue through photosynthesis, its release back into the atmosphere through respiration, the decomposition of extinct creatures, and the burning of fossil fuels.
1. Carbon dioxide, a type of carbon, is released into the atmosphere. Examples include combustion and breathing.
2. Plants use the carbon dioxide in the air, and following photosynthesis, they release oxygen into the atmosphere.
3. Environment-present animals consume plants and transfer carbon up the food chain. They breathe out carbon dioxide into the atmosphere. Animals and plants pass away after a specific amount of time.
4. Unless fossils of plants and animals are developed, which also contain carbon, the body of plants and animals is eaten through decomposition, returning the carbon to the environment in the form of carbon dioxide.
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Which pairings match protozoa with the structures they use to move? amoeba: flagellum; euglena: cilia; paramecium: pseudopod amoeba: pseudopod; euglena: flagellum; paramecium: cilia amoeba: flagellum; euglena: pseudopod; paramecium: cilia amoeba: pseudopod; euglena: cilia; paramecium: flagellum
Answer:
The correct answer is - amoeba: pseudopod; euglena: flagellum; paramecium: cilia
Explanation:
Protists use different type of structures for their movement known as pseudopods, flagella, and cillia.
Pseudopods are the structures found in amoeba in which flowing of protoplasm moves the amoeba forward.
A euglena moves by strikes or whip its flagellum, that is a long appendages, like propeller of a helicopter.
Cilia are thin, very small tail-like structure that stretched outward from the of body of paramecium.
Thus, the correct answer is - amoeba: pseudopod; euglena: flagellum; paramecium: cilia
what is nitrification? describe the role of nitrify bacteria in this process
Nitrification is a process that converts ammonia into nitrate by bacteria.
Role of bacteriaThe bacteria Nitrosomonas and Nitrococcus present in the soil convert NH3 to NO2-, and another bacterium, Nitrobacter converts NO2- to NO3-. These bacteria gain energy through these conversions.
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the control variables are...
Answer:
it is the amount of soil, sunlight, and the music they listen to
control variables are the elements that are always constant and not changed throughout the experiment.
Which of the following does NOT secrete hormones?
A. Ovaries
B. Skin
C. Adrenals
D. Pancreas
Answer:
skin acts as a protective barrier, therefore it does not secrete hormones
Skin does not secrete hormones. Thus, the correct option is B.
What are Hormones?Hormones may be defined as chemical substances that are produced by the organ system of an organism and transported at the site of action via the bloodstream. Hormones act as messenger molecules in the body.
Skin acts as the primary or first line of defense for the immune system. It does not secrete any hormones. It plays an important role in innate immunity. Ovaries are responsible for the secretion of hormones like estrogen and progesterone in females and regulate all the prospective consequences in the body of females.
The adrenal gland secretes hormones like cortisol and aldosterone which are steroid hormones. Such hormones are important in regulating metabolism, inflammation, immune functions, etc. The Pancreas secretes insulin and glucagon which play an active role in regulating the level of glucose in the blood.
Therefore, the skin does not secrete hormones. Thus, the correct option is B.
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Arborviral diseases: Group of answer choices Refer to arthropod-borne viral diseases Can produce central nervous system illness Are most often spread by mosquitoes May produce acute self-limited fevers
Answer:
All of the options are correct.
Arboviral diseases are arthropod borne, they can produce central nervous system illnesses, transmitted by mosquito bites and also produce acute self limiting fevers.
Explanation: Arboviruses are viruses that are harboured by arthropods which includes mosquitoes, they have the capacity to cause illnesses which are acute and self limiting(it has the ability to resolve on its own without treatment). It has also been found to cause illnesses to the central nervous system(the brain and the spinal cord).
Sebastian wants to make ball-and-stick models of the four macromolecules. He has colored balls for each of the elements in these molecules, including the following. red: hydrogen black: carbon purple: oxygen green: nitrogen Which molecule could he make that consists of long chains of red and black colored balls? carbohydrates lipids nucleic acids proteins
Answer:
lipids
Explanation:
There are four major biological macromolecules in living systems viz: carbohydrate, proteins, lipids and nucleic acids. These macromolecules play a significant role in the optimal functioning of every living organism. Like every other polymer, these macromolecules are made up of simpler units called monomers that defines their chemical structure. In turn, the monomers consists of chains of chemical elements held together.
According to the question, Sebastian has colored balls that represents the elements contained by each of these macromolecules. The colored balls and the elements they represent are as follows: Red: hydrogen, Black: carbon, Purple: oxygen, and Green: nitrogen.
Lipids are structurally made up of fatty acids and glycerol, which are long chains of carbon and hydrogen elements with a relatively small percentage of oxygen in the structure. An example is palmitic acid, which has a structural formula: CH3(CH2)14COOH
Hence, Sebastian could make a LIPID macromolecule, which consists of long chains of red (hydrogen) and black (carbon) balls since lipids are mostly made up of carbon and hydrogen elements in their structure.
Carbohydrates are composed of more percentage of oxygen in their structure. Hence, a long chain of only red (hydrogen) and black (carbon) balls cannot make them. Proteins and nucleic acids are made up of additional nitrogen and phosphorus elements in their structure.
Answer:
B. Lipids
Explanation:
Lipids contain carbon and hydrogen.
explain what causes eclipses and how often they occur compare the two types of eclipses explain what causes moon phases describe each phase of the moon Big Ideas: Key Questions and Terms Notes Focus Question: What causes lunar and solar eclipses? Describe what causes a solar eclipse. Describe what causes a lunar eclipse. Why do lunar eclipses make the moon appear red in color? Draw an example of a lunar eclipse. Draw an example of a solar eclipse Focur Questions: What causes the phases of the moon? At any given time in space, how much of the moon is lit by the sun? Describe the appearance of the moon and its position during each phase: New moon: Waxing crescent moon: First quarter moon: Waxing gibbous moon: Full moon: Waning gibbous moon: Third quarter moon: Waning crescent moon: How are lunar phases different from eclipses? Eclipses Video: Key Questions and Terms Notes When the moon passes between the sun and Earth, it can create a __________ eclipse. When the disk of the moon masks the disk of the sun, it creates a _________ eclipse. ___________ eclipses occur when Earth passes between the sun and the moon. During a lunar eclipse, the moon turns dark ______ due to the deviation of the sun's rays caused by Earth's atmosphere. __________ eclipses occur more often and last longer.
[tex] \Large{ \boxed{ \bf{ \color{blueviolet}{Required \: answers:}}}}[/tex]
1) An eclipse takes place when one heavenly body such as a moon or planet moves into the shadow of another heavenly body. There are two types of eclipses on Earth:
An eclipse of the moon An eclipse of the sun.2) Most years have 4 eclipses, which is the minimum number of eclipses that take place in a year; 2 of these 4 eclipses are always solar eclipses. While rare, the maximum number of eclipses that can take place in a calendar year is 7.
3) Differences:-
Solar eclipses happen at new moon. Lunar eclipses happen at full moon.Solar eclipses are only visible from a narrow strip of land over which the Moon shadow passes. Lunar eclipses are visible from the whole nighttime hemisphere.Solar eclipses can be total, annular, hybrid or partial. Lunar eclipses can be total, partial and penumbral.Solar eclipses can only be safely be viewed with the naked eye during totality. Lunar eclipses can always be safely viewed with the naked eye.The Moon's surface can't be seen during a solar eclipse, but it can be during a lunar eclipse.4) Moon phases:
We only see the Moon because sunlight reflects back to us from its surface. During the course of a month, the Moon circles once around the Earth. If we could magically look down on our solar system, we would see that the half of the Moon facing the Sun is always lit. But the lit side does not always face the Earth! As the Moon circles the Earth, the amount of the lit side we see changes. These changes are known as the phases of the Moon and it repeats in a certain way over and over.
5) The moon moves in an orbit around Earth, and at the same time, Earth orbits the sun. Sometimes Earth moves between the sun and the moon. When this happens, Earth blocks the sunlight that normally is reflected by the moon. Instead of light hitting the moon’s surface, Earth's shadow falls on it. This is an eclipse of the moon -- a lunar eclipse.
Sometimes when the moon orbits Earth, it moves between the sun and Earth. When this happens, the moon blocks the light of the sun from reaching Earth. This causes an eclipse of the sun, or solar eclipse. During a solar eclipse, the moon casts a shadow onto Earth.
6) The moon can look red during a total lunar eclipse because of sunlight that's filtered and refracted by Earth's atmosphere.
7) 50% of the lunar surface is always illuminated by Sun. Because half of the moon surface is lit, rest we can't see.
8) When the moon passes between the sun and Earth, it can create a solar eclipse. When the disk of the moon masks the disk of the sun, it creates a total solar eclipse. Lunar eclipses occur when Earth passes between the sun and the moon. During a lunar eclipse, the moon turns dark red due to the deviation of the sun's rays caused by Earth's atmosphere. Lunar eclipses occur more often and last longer.
In the attachment:-Solar eclipse Lunar eclipse Phases of moon[tex] \large{ \bf{ \red{Phew \: !!}}}[/tex]
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mitosis cell division are required to form 64 cell for one cell?
a.4
b.6
c.16
d.32
Answer:
im not sure
Explanation:
An investigation is an example of_____.
A. inquiry
B. pseudoscience
C. the scientific method
D. bias
Answer:
C) the scientific method / Maybe A) depending on teacher..
Explanation:
A) inquiry - an act of asking for information.
B) pseudoscience - a collection of beliefs or practices mistakenly regarded as being based on scientific method.
C) the scientific method - a method of investigation in which a problem is first identified and observations, experiments, or other relevant data are then used to construct or test hypotheses that purport to solve it.
D) bias - prejudice in favor of or against one thing, person, or group compared with another, usually in a way considered to be unfair.
which instrument is used to measure volume of liquid in laboratory?
Answer:
Liquid volume is usually measured using either a graduated cylinder or a buret. As the name implies, a graduated cylinder is a cylindrical glass or plastic tube sealed at one end, with a calibrated scale etched (or marked) on the outside wall.
Explanation:
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For this assignment, you'll be creating a document or project. Now that you have an idea of the organ systems in the human body, it’s time to choose one that interests you the most. Use the links below to find detailed information about the organ system you choose. You will use this information to create a poster in Glogster or PowerPoint that illustrates the major facts and details of the system you chose. To make it fun and interesting, create a “ Travel Guide” that takes the reader through the system, detailing the organs in that system and what they do for the body.
To complete this assignment follow these steps: Choose your organ system to profile. Research the following information about your organ system: Short description of the organ system: What does the “organ system” do? (IE: endocrine system) How is the system organized? What are the major organs in this system? What is the main or most important organ in the system? How do these organs work together to do what they do? What are the functions in the human body that are done by this organ system? What would happen to the body if this organ system “failed”, or didn’t work right? Use the links to websites to gather that information. Save any graphics you want to use in creating your Poster.
If you choose Glogster: Go to Glogster and follow their instructions in setting up an account. It’s easy and it’s free. Watch the tutorial and then get started!
Answer: Here's a power point on the endocrine system. I hope this helps.
Explanation:
Examine the statement. A scientific theory can become a scientific law, but a scientific law cannot become a scientific theory. If the statement is true, select “True.” If it is false, select the option that is true 1.) True 2.) A scientific theory can become a scientific law, and a scientific law can become a scientific theory. 3.) A scientific law can become a scientific theory, but a scientific theory cannot become a scientific law. 4.) A scientific theory cannot become a scientific law, and a scientific law cannot become a scientific theory.
Answer:
It's true.
Explanation:
In general, a scientific law is the description of an observed phenomenon. It doesn't explain why the phenomenon exists or what causes it. The explanation of a phenomenon is called a scientific theory. It is a misconception that theories turn into laws with enough research.
When the scientists test the idea, they develop a theory by following a set of logical steps. A theory becomes a scientific law once it has been rigorously examined and accepted. Thus, option A is correct.
What A scientific theory can become a scientific law?One prevalent fallacy is the idea that hypotheses eventually become laws. Despite the number of supporting examples, hypotheses do not actually become laws after repeated testing.
Scientific laws, like theories, explain occurrences that the scientific community has determined to be verifiably true. In general, laws explain what will occur in a specific circumstance and are proven by a mathematical equation, whereas theories explain how the phenomenon occurs.
Therefore, A testable explanation of a natural event is what constitutes a scientific hypothesis. The concept of gravity, for instance, explains why an apple always falls to the ground when.
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Cells have what type of bilayer that is not
soluble in water?
A. phospholipid
B. protein
C. cellulose
Answer:
P
Explanation:
Phospholipod is type of bilayer
Cells have phospholipid type of bi-layer that is not soluble in water.
What is cells ?The cells are basic structural unit of living organism.The cells have mainly three parts: cell membrane, the nucleus and cytoplasm.The cells are responsible for the all process of lifeWhy phospholipid is not solunle in water?The lipid containig a phosphate group in its molecule is called phospholipid.The cell membrane is made of phospholipid which is not soluble in water.The phospholipids has hydrophilic head contains phosphate group and two hydrophobic tails which drive from fatty acids and joined by alcohol.This fatty acid is made of ten or more carbon atoms and having low density . So, it float on the surface of the water when mixed with water.learn about cells ,
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why do we study plants?
A cell biologist carefully measures the quantity of DNA in grasshopper cells growing in cell culture. Cells examined during the G1 phase of the cell cycle contained 200 units of DNA. What would be the amount of DNA in one of the grasshopper daughter cells right after cytokinesis?
Answer:
200 units
Explanation:
Cell cycle refers to the series of events that occurs throughout the division of a cell. Mitosis is the division used during cell growth. Mitosis consists of the Interphase stage and the Mitotic phase. The interphase stage is made up of the G1, S and G2 phases in that order. The genetic material (DNA) of the cell replicates during the Synthesis (S) phase.
Hence, this means that the DNA of grasshopper cells in the culture observed during the G1 phase will enter the S phase and replicate i.e. 200 units will form 400 units.
The cell go ahead to undergo nuclear division during the anaphase of the mitotic phase. Hence, each pole of the cell will contain 200units of DNA each. During Cytokinesis, the cytoplasm of the cell divides and the contents of the opposite poles becomes a new daughter cell. Each daughter cell will therefore contain 200 units of DNA each.