Index fossils are the remains of species that existed on Earth for relatively short periods of time. True or false?
Answer:
yh that true cause they are useful
Answer:
True
Explanation:
Remains of species that existed on Earth for a relatively short period of time, were abundant and widespread geographically, and can be used by geologists to assign the ages of rock layers.
An experiment was conducted to determine if hot water will freeze faster than water at room temperature. Which of the following is the dependent variable? 1.Temperature of the freezer 2.The water at room temperature 3.The hot water 3.The rate of freezing
Answer:
The dependent variable is the variable that changes when the independnet variable is manipulated.
Explanation:
The independent variable is the water temperatures, the variable you change. The dependent variable is the rate of the water freezing.
Which scientific tool is the best choice for use when a procedure says to obtain about 75 mL of a liquid? Why?
Answer:
Beacon because it can obtain more or less depending on what the size or measurement is
40 POINTS! FIRST TO ANSWER CORRECTLY GETS BRANLIEST! The image below shows a certain type of global wind: What best describes these winds? Polar easterlies caused due to sinking, cool air above the poles Polar easterlies caused due to rising, warm air above the poles Trade winds caused due to sinking, cool air above the equator Trade winds caused due to rising warm air above the equator
Answer:
Its b
Explanation:
Answer:
Polar easterlies caused due to rising, warm air above the poles
Explanation:
Got it right!
Which experiment would most likely contain experimental bias? A. A chemistry class performs an experiment in which each reaction has the same amount of starting material and begins at the same temperature. B. A student tests the attraction of bees to flowers by placing four different flowers in the same location and counting how many bees visit each. C. A lab performs a test by giving bacterial colonies the same amount of different antibiotics and growing them under the same conditions. D. A company that makes pain relief medication tests the effectiveness of their own medicine compared to that of three other brands.
Answer:
A lab performs a test by giving bacterial colonies the same amount of different ... A student tests the attraction of bees to flowers by placing four different flowers ... A chemistry class performs an experiment in which each reaction has the same amount of starting material and begins at the same temperature.
In a grassland ecosystem, if the population of eagles suddenly decreased, what will most likely be the effect on the rest of the ecosystem
Amoebas and euglenas can protect themselves from unfavorable conditions with a
cyst
spore
vacuole
asci
Answer:
Option A.
Explanation:
During the unfavourable conditions, Amoeba FORMS A CYST which help Amoeba to protect it from adverse conditions or environment.
Answer:
CYST
Explanation:
how can you persuade someone to eat healthy?
Answer:
You can persuade someone to eat healthy food if yiu give the person the consequences of not eating healthy food.
Answer:
How to Motivate Others to Get Healthy
Help them find the "why." Get clear on why better health is important to them. ...
Listen. ...
Incentivize the process. ...
Don't be a scold or perfectionist. ...
Do be gently insistent. ...
Ask them to sign a contract committing to exercise or healthier eating. ...
Don't trip over positive thinking. ...
Be a workout or meal buddy.
Explanation:
Which of the following can be attributed to water's high specific heat? O Oil and water do not mix well. O Alake heats up more slowly than the air around it. Ice floats on water. Sugar dissolves in hot tea faster than in iced tea.
Answer:
O A lake heats up more slowly than the air around it.
Hope this helps :)
The high specific heat of water makes lakes to heat up more slowly than the air around it.
Water is said to have high specific heat, what this means is that it requires more energy to raise the temperature of water in relation to other substances.
Before water can become hot or warm, it first has to be able to absorb a lot of heat around. This is very important to climate and it also helps to determine if certain areas of the world are habitable.
Read more on https://brainly.com/question/15691747?referrer=searchResults
A student wants to study the feeding habits of birds in his backyard. He places 1.000 grams of birdseed in a feeder on his
back porch. Each evening, he uses a balance to measure how many grams of seed are left in the container so that he can
calculate how much food was eaten that day. Which of the following quantities is the student measuring?
temperature
mass
distance
volume
A hypothesis is an educated guess about the relationship between
-Husband and wife
-Best friends
-Independent and dependent variables
What caused the oxygen to accumulate in the atmosphere?
Pathogens are microorganisms that can make you sick if you eat them. True or false
The answer is: True
Which of these types of organisms undergo the procell
of cellular respiration
Plants only
Animals only
Plants and animals
Neither plants or animals
Answer:
Plants and animals both.
Hope it helps.
Mark it as Brainliest.
Answer:
both
Explanation:
I took the test in K12, I hope this helps
Which of these elements is found in both carbohydrates and water?
Answer:
tyyyyyyyyyyyyyy
Explanation:
yyyyyyyyyyyyyy
Answer: B
Explanation:
a hypothesis that has support to back it up and is yet to be disproved
Answer:
a theory
Explanation:
A hypothesis that has support to back it up and that is yet to be disproved can be referred to as a theory.
Ordinarily, a hypothesis is a tentative statement that has not been proven in any way. Once a hypothesis has supports to back it up and there are no counter-evidence to disprove it, it becomes a theory.
In other words, a theory is a proven hypothesis and it remains so until there are overwhelming evidence to counter the supporting evidence.
5. Tap water will evaporate faster than salt water.
Independent Variable:
Dependent Variable:
Hypothesis:
Answer:
Ind. V= type of water, dep. v= rate of evaporation, hypothesis= Tap water will evaporate faster than salt water.
Explanation:
Independent Variable Tap water, salt water.
Dependent Variable rate of evaporation.
Hypothesis Tap water will evaporate faster than salt water.
What is a variable?A variable is anything we measure: an event, a time interval, etc. It does not have a fixed value.
What is an independent variable?It is a variable whose value is not affected by the other variables being studied. Alternatively, it is the cause.
What is a dependent variable?It is a variable whose value is determined by the changes in the independent variable. It is the effect.
What is a hypothesis?A hypothesis is a statement that is presented as an argument and then is tested to see if it is correct.
To learn more about variable, independent variable, dependent variable, and hypothesis here,
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True or False: In an experiment to avoid errors you should only change one variable, all other factors should remain the same.
Answer:
True
Explanation:
In an experiment, if you change more than one variable at a time, you will not know what is causing the potentially different outcome. If you only change one variable and leave all other factors constant, you will know exactly what is causing the data.
I hope this helps!
-TheBusinessMan
explain why if the pancreatic duct is cut, then digestion is affected but the control of blood glucose is not
Answer:The pancreas is a mixed exocrine and endocrine organ that is located in the retroperitoneum in the upper abdomen. It is a firm, fleshy organ that has a yellow lobulated cut surface. The weight of the pancreas is in the range 50-150g and the length is around 150mm.The pancreas is a mixed exocrine and endocrine organ that is located in the retroperitoneum in the upper abdomen. It is a firm, fleshy organ that has a yellow lobulated cut surface. The weight of the pancreas is in the range 50-150g and the length is around 150mm.
Explanation:
The central nervous system includes all of the following except: brain spinal cord nerves that reach the tissues in limbs cerebellum
Answer:
My answer is the CNS consist of the brain and the spinal cord nerves but not cerebellum.
The nerves that reach the tissues in limbs is not the part of the central nervous system.
• The central nervous system or the CNS mainly is formed of the spinal cord and the brain. However, it generally is considered to exhibit seven fundamental parts, that is, the spinal cord, the pons, the medulla, the midbrain, the cerebellum, the cerebral hemispheres, and the diencephalon.
• The parts of the nervous system apart from the brain and the spinal cord is known as the peripheral nervous system.
• It comprises the spinal nerves, the cranial nerves and their roots and branches, the neuromuscular junctions, and the peripheral nerves.
• The bundles of axons or the nerve fibers transmit information to and from the central nervous system in the peripheral nervous system.
Thus, the nerves that reach the tissues in the limbs is the part of peripheral nervous system not central nervous system.
To know more about:
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What are the smallest functional and structural building blocks of life
Answer:
Explanation:it is a cell because that is what starts life
Which of the following is an example of a testable question? Are people who read non-fiction smarter than people that read fiction? Does God exist? Does Nyquil cause a decrease in heart rate in mice? Do ninth graders’ GPAs increase with better study habits?
Answer:
I think the answer is "Does Nyquil cause a decrease in heart rate in mice". Thank you for the question.
what are the 7 characteristics all living things have or do? do viruses fit this definition?
answer
nutritionrespirationexcretionreproductiongrowthmovementsensitivityyes virus fit that definition.
that's the answer that I know
thank you
During the water cycle , the suns energy evaporates water from the surface of earth . This water is the source of
Answer:
The answer is Precipitation
Explanation:
Answer:
it is a source of Precipitation
what are the similarities between living and non living things
both having gravity, you can touch and see both of it. It also possible if microorganisms can live on both of them.
They both have shape also.
Answer:
1. They both occupy space.
2. They both are made of atoms and molecules.
3. They both can be moved at the cost of energy.
4. They both have mass.
5. They both consist of fundamental units.
Hope it helps!!Please mark me as the brainliest!!!Thanks!!!!❤✨
NB: Similarities between are mostly: [Both have, contain] Meaning we should use (Both) in writing similarities.
What is the pH of a 0.15 M NH4OH solution with a Kb of 1.78 x 10^-5?
a. 11.21
b. 11.93
c. 12.09
d. 10.85
Answer:
The correct option is;
a. 11.21
Explanation:
The chemical equation for the reaction is;
NH₄OH ↔ NH₄⁺ + OH⁻
At the start of the reaction, we have;
NH₄OH ↔ NH₄⁺ + OH⁻
I [tex]{}[/tex] 0.15 0 0
C 0.15 - x +x +x
The [tex]k_b[/tex] = 1.78 × 10⁻⁵
Therefore, we have;
1.78 × 10⁻⁵ = [NH₄⁺][OH⁻]/NH₄OH = x²/(0.15 - x)
Which gives;
(0.15 - x) 1.78 × 10⁻⁵ = x²
x² + 1.78 × 10⁻⁵x - 2.67× 10⁻⁶ = 0
Factorizing the above equation online, gives;
(x + 0.00164294)(x - 0.00162514) = 0
Therefore;
x = -0.00164294, or x = 0.00162514
We use the positive result, which is x = 0.00162514 = 1.62514 × 10⁻³ = [OH⁻]
Therefore;
pOH = -log[OH⁻] = -log(0.00162514) = 2.789
pH + pOH = 14
Therefore;
pH = 14 - pOH = 14 - 2.789 ≈ 11.21089
The pH of a 0.15 M NH₄OH solution with [tex]k_b[/tex] = 1.78 × 10⁻⁵ = 11.21.
The pH of a 0.15 M NH₄OH solution with [tex]k_b[/tex] = 1.78 × 10⁻⁵ is approximately 11.21
pH value is the measure of acidic or base properties of a solution.
The answer to the given question is a. 11.21. It is explained as follows.
The range of pH value is between 0 to 14 in which value 7 is the neutral pH which is associate with water.
The water has no dominant properties of acid neither base.
The pH value below 7 is for acidic properties and for above 7 is associate with base properties.
The pH value of 0.15 M NH4OH solution is 11.21 as it displays strong base properties.
The correct answer is a. 11.21.
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Need ins
1. Which one of these things is not something that a clownfish needs?
a. algae
O b. the sun
O c. sharks
d. other clownfish
Answer:
c. sharks
Explanation:
How are natural resources classified?
renewable resource
Explanation:
they are the resource made by god
The three types of "scientific" research you might come across are ___ , ___ , and ___ .
Answer:
Physical, Earth, and Life science are 3 common scientific researches
Explanation:
Hope this helped!
~Emilie Greene
Using the formula in your notes, calculate the growth rate for a population of 1,200 with a carrying capacity (K) of 2,000 and a maximum per capita growth rate (rmax) of 0.3.
Answer:
The correct answer is : 144.
Explanation:
Given:
K or carrying capacity = 2000
N or population size = 1200
rmax or maximum per capita growth rate = 0.3
formula:
growth rate = [tex](rmax) (N) \frac{K-N}{K}[/tex]
Solution:
by the formula ,
growth rate =
[tex](0.3) (1200) \frac{2000-1200}{2000}[/tex]
= [tex]360 [\frac{800}{2000}][/tex]
= 360 × 0.4
= 144
Thus, the correct answer is : 144.