Answer:
Carbon Cycle
Explanation:
What invention in the 1400's revolutionized the way knowledge could be spread?
A. The newspaper
B. The telephone
C. The printing press
D. The internet
The invention is the printing press in the 1400s revolutionized the way knowledge could be spread. The correct option is C.
What is a printing press?A printing press is a place where paper is printed. The printing press was invented in 1400 in France. Before it, there was no printed paper. The printing press started the newspapers and pamphlets and other papers. Printing presses are of many use in different sectors.
In the 1400, the revolutionized way of information and knowledge 1400 was the printing press. Starting a printing press will print books and papers, which was good for the knowledge of the citizens.
Thus, the correct option is C. The printing press.
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Which of the following is a distinct structure found specifically in the liver, spleen, and bone marrow?
Select one:
a. Sinusoidal capillaries
b. Fenestrated capillaries
c. Venous sinus
d. AV anastomoses
e. Continuous capillaries
Answer:
option A is correct
Explanation:
Describe five of these properties and provide an example of each: Hydrogen bonding, cohesion and adhesion, surface tension, heat of vaporization, specific heat, density, and universal solvent
Answer:
Explanation:
Hydrogen bond is an intermolecular force of attraction, it occur between a proton in a molecule and an electronegative atom in the another. It is weak bond and can be found in water molecule.
Cohesion is force of attraction thst occur when molecules are attracted to other molecules of the same type
this can be found in hydrogen bonding.
Adhesion occur when molecules are attracted to different substances. It can be founf in water when reaction with other substance
A universe solvent is a substance that is used to dissolves many substance. Example is water it can be used in dissolving many substance.
Surface tension is the ability of a liquid surfaces to reduce into the minimum surface area. It allows some insect that are less dense to float in water
Head of vapourization is the amount of heat required to change a liquid into a vapor. Heat to convert water into vapour
Answer:
pH
Explanation:
"The pH of a solution is a measure of the molar concentration of hydrogen ions in the solution and as such is a measure of the acidity or basicity of the solution. The letters pH stand for 'power of hydrogen' and numerical value for pH is just the negative of the power of 10 of the molar concentration of H+ ions."
hope this helps :)
What is the independent variable in the experiment?
A. growth rate of plants
B. amount of light each terrarium is exposed to
In humans, the quadriceps muscle is a skeletal leg muscle under voluntary control. As such, it contracts in response to signals from the motor cortex in the cerebrum. If such a muscle contracts involuntarily, that indicates:
Answer:
The correct answer is - operation of reflex arc.
Explanation:
The reflex arc is a unique and special type of neural pathway that starts with a sensory neuron and ends with a motor neuron. In this operation sensory neuron acts as the receptor and motor neuron is effector. This type of neural circuit helps in faster response.
Voluntary muscles like quadriceps muscle are normally in control voluntarily however, such muscle may contract involuntary due to reflex arc. This type of contraction takes place before the signal has even reached the brain.
In this response the sensory neuron takes the signal to the spinal cord and then motor neuron to the effector muscle for faster response.
Thus, the correct answer is - operation of reflex arc.
How are the hours of darkness linked to the flowering time in plants?
Answer:
Hope it helps
Explanation:
plants flower as days grow shorter (and nights grow longer) after 21 June in the northern hemisphere, which is during summer or fall. The length of the dark period required to induce flowering differs among species and varieties of a species.
briefly outline how cell theory has developed over the past 400 years
Explanation:
The cell theory, or cell doctrine, states that all organisms are composed of similar units of organization, called cells. The concept was formally articulated in 1839 by Schleiden & Schwann and has remained as the foundation of modern biology. The idea predates other great paradigms of biology including Darwin’s theory of evolution (1859), Mendel’s laws of inheritance (1865), and the establishment of comparative biochemistry (1940).
First Cells Seen in Cork
While the invention of the telescope made the Cosmos accessible to human observation, the microsope opened up smaller worlds, showing what living forms were composed of. The cell was first discovered and named by Robert Hooke in 1665. He remarked that it looked strangely similar to cellula or small rooms which monks inhabited, thus deriving the name. However what Hooke actually saw was the dead cell walls of plant cells (cork) as it appeared under the microscope. Hooke’s description of these cells was published in Micrographia. The cell walls observed by Hooke gave no indication of the nucleus and other organelles found in most living cells. The first man to witness a live cell under a microscope was Anton van Leeuwenhoek, who in 1674 described the algae Spirogyra. Van Leeuwenhoek probably also saw bacteria
The cell theory, states that all organisms are composed of similar units of organization, called cells.
What is cell theory?The concept of cell theory was in 1839 by Schleiden & Schwann which leads the foundation of modern biology. Cell theory states that every cell is generated from another preexisting cell.
This idea makes the great revolution in biology including Darwin’s theory of evolution (1859), Mendel’s laws of inheritance (1865), and the establishment of comparative biochemistry (1940).
Schleiden & Schwann propose every organism is composed of the cell, which is the basic unit of life and each cell comes from the preexisting cell, and each cell produces a progeny which is similar to its parent cell.
Therefore, cell theory states the existence of the cell in the organism.
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How does latitude affect a climate zone?
A. Climate zones at high latitudes are cooler because they are closer to the equator.
B. Climate zones at high latitudes receive a lot of precipitation because they are farther C. from the equator.
D. Climate zones at low latitudes receive little precipitation because they are closer to the ocean.
None of the options is entirely correct about latitude and climate zone.
Latitude and climate zoneLatitude is one of the main factors that affect climate, along with elevation, ocean currents, and prevailing winds.
Generally, the farther away from the equator a location is, the colder its climate is. This is because the angle of the sun's rays hitting the Earth's surface is more oblique at higher latitudes, resulting in less heat being delivered per unit of surface area.
However, precipitation patterns are not solely determined by latitude. They are also affected by other factors such as prevailing winds, ocean currents, and topography. For example, areas located on the windward side of a mountain range tend to receive more precipitation than those on the leeward side, regardless of their latitude.
Therefore, while latitude is an important factor in determining climate zones, it does not fully determine precipitation patterns or temperature.
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what is the symptom of marasmus disease
pls tell any 2 symptom of it
in short pls
Weight loss and dry skin and eyes are few of the symptoms of that disease
Answer:
the symptoms of marasmus are:
respiratory infectiondry skin and eyesI hope this helps
Why do doctors have to check what blood type a person has before receiving a
transfusion?
0
A. Different blood types have different antibodies that will be attacked by someone with
antigens against that blood type.
B. Different blood types have different antigens that will be attacked by someone with
antibodies against that blood type.
C. Your blood type doesn't matter as long as you get the correct amount of blood in a
transfusion.
O
D. They need to have the same blood type because their DNA must be similar enough to
blend or will cause side-effects and possibly be rejected.
Answer:
A. Different blood types have different antibodies that will be attacked by someone with
antigens against that blood type.
3. Which of the following most accurately represents the various feeding relationships within an ecosystem?
O A. A biomass pyramid
O B. A food chain
O C. A feeding diagram
OD. A food web
Answer:
B- A food chain
Explanation:
This answer has been confirmed as correct and helpful
what is which sphere
Answer:
frog is the best answer
Please helpppppppppp ASAP
100 extra points
Answer
answer with the help of this
Explanation:
1. As a group, you and three other students must make a presentation on an animal. Which option is the best example of your group coming to a consensus on the presentation topic?(1 point)
A. A group member is selected as the team leader and the team leader chooses the presentation topic.
B. Each member gets a vote and the animal with the most votes will be the presentation topic.
C. The group writes options on slips of paper, puts them in a hat, and the paper that is selected will be the presentation topic.
D. The group cannot agree on what animal to choose so your teacher chooses your presentation topic.
2. Why might a paleontologist who works with fossils and an archaeologist who specializes if recovering human artifacts work together to determine where a fossil belongs in the hominid family tree?(1 point)
A. They both know how to remove objects carefully from the ground.
B. They both have different skills to help answer the question about ancient humans.
C. They both understand the relationship between fossils and early humans.
D. They both are experts on different types of bones.
3. Suppose a team of scientists has uncovered the site of an ancient city along a river. Which question could an anthropologist and archaeologist work together to help answer?(1 point)
A. Which plants did humans grow at this site and how were they grown?
B. How have humans impacted the rock layer of the city changed over time?
C. What tools were found at the site and which civilization used them?
D. How did changes in the depth of the river affect the houses people built at the site?
4. Insects are important to many ecosystems. For example, bees help pollinate many different plants and many animals rely on insects as food sources. Citizen science projects allow the public to work together with scientists by collecting observational data on many types of organisms such as plants, birds, or insects.
Which question could citizen science data answer that best illustrates insect population responses to climate change?
(1 point)
A. “What tree species provide the best habitat beetle species in this area?”
B. “What types of foods can butterflies eat?”
C. “How many dragonfly species are native to this region?”
D. “How does caterpillar abundance and distribution change over the year?”
5. Coral bleaching occurs when coral become stressed and expel the algae that they contain. According to scientists, what steps can society take to fix coral bleaching?(1 point)
A. Scientists have concluded that society can only fix coral bleaching by stopping climate change entirely.
B. Scientists have concluded that society can fix coral bleaching by reducing stressors, such as sedimentation and pollution, and limiting climate change.
C. Scientists have concluded that society can fix coral bleaching by reducing stressors, such as sedimentation and pollution.
D. Scientists have concluded that society can only fix coral bleaching by controlling ocean temperatures by reducing greenhouse gas emissions.
Answer:
(Q1: B)
(Q2:B)
(Q3:C)
(Q4:D)
(Q5:B)
Explanation:
Question 1:
A consensus hears all voices in a group and goes with the common "majority rule" and B shows this in clear detail.
Question 2:
They both have different skill sets but we can remove option A because all fossils are handled the same way. We can remove D because it doesn't make sense for the question which leaves us with C and B. This makes us know that the answer is B because it makes the most sense for the question.
Question 3:
An anthropologist is someone who specializes in the study of human societies and cultures and their development and an archaeologist is someone who digs up fossils. The only answer that makes sense here is C because the archaeologist can uncover the tools and where they made marks in the rock while an anthropologist can use those to discover what civilization it was and how those tools were used.
Question 4:
In the context of this question we can decide that the only relevant answer is D because it would watch over a period of time that could show climate change while the others are just simple facts that can be uncovered about the daily life of these insects.
Question 5:
The steps that can be taken to fix coral bleaching are to reduce stressors, such as sedimentation and pollution, and limiting climate change. This is because the main things that cause the coral to become bleached are changes in the temperature and salinity of the water. By polluting the ocean we change the chemical formula of the water and therefore affect the coral and the climate change heats the ocean to temperatures that the coral can't or will not be able to withstand.
y is the enzyme that catalyses the hydrolysis of sucrose into glucose and fructose. What is enzyme y?
Answer:
y enzyme is Invertase
Explanation:
Invertase is the enzyme that catalyses the hydrolysis of sucrose into glucose and fructose.
Before moving a microscope, changing slides, or putting it away you must always ____. This prevents damage to the scope.
Answer:
You must always use two hands.
Explanation:
Using two hands provides more stability when carrying the microscope. So that would lower the chances of damaging the scope. Yw >:)
How are the proteins inside your body affected by the presence of water and other molecules?
Answer:
Our body is constitute of several essential molecules such as proteins, fat, carbohydrate, water, and other molecules.
Each molecule has some of the impact of other molecules in the body. Impact of water and other molecules on proteins inside the body are as follows:
Proteins have ligand-binding site and water provide stability to the ligand-binding site of proteins through its hydrogen bonds.Conformational flexibility and transitions of proteins are due to the presence of water molecules in it.Disbalance in the pH of body due to changing concentration of sodium-potassium ions can denature the protein. Enzymes present in the body can control the rate of formation of proteins in the body.
What are the six steps of the scientific method?(in order)
Options-
Problem question
Report results
Hypothesis
Analyze data and draw conclusions
Report
Analysis
Experimentation
Organize data
Observation
Answer:
Observation
Problem question
Organize data
Hypothesis
Experimentation
Analyze data and and draw conclusions
Report results
Explanation:
What is a scientific theory? What is a hypothesis? How are they similar? How do they differ?
Answer: Scientific theories can be backed up with evidence/data (the evidence that backs the theory isn't common knowledge to everyone yet), while a hypothesis is just an educated guess, meaning that you are making a prediction based on something already known.
They are both similar in the sense that they are questions that are answered by facts, but theories are answered with factual evidence rather than factual reasoning (hypothesis).
Which of the following represents biotic factors? 1. Sunlight II. Oxygen III Plants
1 and 11
ll and III
lll only
ll only
Answer:
1 and 11
Explanation:
The five abiotic factors are sunlight, temperature, water, oxygen, and soil.
Plants represent biotic factors.
What is a biotic factor?"A biotic factor is a living organism that shapes its environment. Example: plants, animals, microorganisms."
What is abiotic factor?"An abiotic factor is a non-living part of an ecosystem that shapes its environment. Example: sunlight, air, soil, water, etc."
What are the components of environment?The basic components of the environment are
atmosphere or the air,lithosphere or the rocks and soil,hydrosphere or the water,the living component of the environment or the biosphere.To know more about biotic factors here https://brainly.com/question/27430655
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5. An area of a cliff has trees that grow into it. The tree roots break through the
rocks, causing some of them to crumble.
a. Is this breaking down of rock an example of weathering, or is it an example
of erosion? How do you know? (2 points)
Answer:
Erosion is the geological process in which earthen materials are worn away and transported by natural forces such as wind or water.
Which of these statements can be predicted with the help of science
Answer:
Something that can be tested, or rationalized.
Explanation:
You didn't give any statements to choose from, so I'll give you a rule of thumb. When finding a scientific statement, make sure it's something like "The tide is higher at noon than it was at 3 am." and not "Your dog is itchy, so that means a bad storm will arrive."
Suppose that you are in charge of designing a fracking job site. Which of these locations would be most ideal for the site?
Answer:
B. On a flat, vacant plot in the outskirts of the city
Explanation:
Fracking, also known as hydraulic fracturing is a drilling method used in the oil and gas industry of most countries. It is the process whereby natural gas and petroleum is extracted from deep down the Earth. A crack is made in the rock layers, followed by the injection of a liquid called fracking liquid, which is usually water, at a very high pressure.
The process of fracking has serious environmental side effects e.g. release of harmful gases, noise pollution, water contamination etc. and hence, when choosing a fracking site, environment's sustainability and safety of people should be taken into account. This is why a fracking site cannot be designed in a residential city or around a neighborhood. The site should rather be designed in a location where it would pose a minimal environmental threat to the people e.g flat, vacant plot in the outskirts of the city
What’s the most significant greenhouse gas increase
Answer:
Carbon dioxide (CO2) is the primary greenhouse gas emitted through human activities.
The organs in the human body perform specific functions for survival.
Organ A delivers blood to the body
Organ B delivers oxygen to the body
Organ C delivers messages to the body
Which of the following correctly identifies the organs that perform each function above?
Organ A is the heart, Organ B is the brain, and Organ C is the lungs
Organ A is the heart, Organ B is the lungs, and Organ C is the brain
Organ A is the lungs, Organ B is the brain, and Organ C is the heart
Organ A is the lungs, Organ B is the heart, and Organ C is the brain
Organ A is the heart
Organ B is the lungs
Organ C is the brain
Because heart only delivers blood to lungs and other body tissues, Lungs input oxygen into the blood and brain sends signals and messages to the body parts.
This is the answer. Hope it helps you
Answer:
B) Organ A is the heart, Organ B is the lungs, and Organ C is the brain
Explanation:
"A type of laser medium that produces a visible blue-green wavelength beam that is absorbed by red-brown pigmented tissue, such as the red hemoglobin in blood, and by the cells that lie under the retina, is a(n)"
Answer: ARGON LASER
Explanation: An Argon laser is a type of unique laser system that was invented in 1964,it is unique because it uses a noble gas (ARGON) as it's active medium. Argon laser functions by emitting a colored light of blue/green,this light is being absorbed by haemoglobin present in blood cells,the heat produced gives room/allows the laser to close up cells of blood that are ruptured.
What happens when the positive transcription factor affinity is slightly lower than the negative transcription
factor's affinity?
(1 point)
O mRNA is made in large quantities in frequent batches.
OmRNA is made in small quantities in infrequent batches.
O mRNA is made in large quantities in infrequent batches.
O mRNA is made in small quantities in frequent batches.
Answer:
O mRNA is made in small quantities in infrequent batches.
Explanation:
mRNA is made in small quantities in infrequent batches because the affinity of positive transcription is lower and affinity of negative transcription is higher which is responsible for production of mRNA from DNA molecule. Transcription is a process in which the information that is present in DNA molecule is copied to new mRNA molecule. Positive transcription factor is a promoter which promotes the initiation of transcription in order to enable RNA polymerase while negative transcription factor is a repressor protein.
what is the meaning of Alkaline medium in life processes
Answer:
an alkali also can be defined as a base that dissolves in water. a solution of soluble base has a pH greater than 7.0. the adjective alkaline is commonly, an alkalescent less often, used in English as a synonym for basic, especially for bases soluble in water.
Describe what makes the Möbius strip different from a strip of paper taped in a circle
Need help with this question
Answer:
she should experiment the hypothesis made by using a different specie in the same vase and record the changes over time
Answer:
A. She should repeat the experiment with the same type of flower and photograph the changes over time.