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Vaselesa [24]
4 years ago
14

How do fossils and fossil records support the idea that life change over time? How is the fossil age measured?

Biology
1 answer:
Alex Ar [27]4 years ago
5 0

Fossils, or preserved parts of organisms from the distant past, have shown that species change over time. Radiometric dating can be used to determine the age of fossils by measuring the how much of the radioactive materials in each rock layer have broken down.

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How do ratio scale and diagrammatic scale work​
uranmaximum [27]

Answer: The scale ratio of a model represents the proportional ratio of a linear dimension of the model to the same feature of the original. Examples include a 3-dimensional scale model of a building or the scale drawings of the elevations or plans of a building.

Explanation:

3 0
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Maria predicts that the amount of light in an environment will affect the growth of algae living in that environment. Which of t
Sati [7]

Answer:

Option A is the correct answer. To conduct a controlled experiment would be the best choice for Maria to test her prediction.

Explanation:

A controlled experiment can be described as an test in which one of the test models is kept constant for a variable, while in other experimental models, a change is made for testing the variable.

It would be best for Maria to conduct a controlled experiment. In the control model, Maria should keep light as constant whereas in other experimental models she should increase and decrease the quality of light to test her prediction. She should then compare her experimental results with the control model to deduce the results.

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3 years ago
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What are the building blocks of DNA And RNA
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3 0
4 years ago
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imagine a model of a cell shaped like a cube.Calculate the ratio of surface area to volume for a cell model measures 3 cm on eac
Svet_ta [14]
Smaller cube (1 cm X 1 cm X 1 cm) 

<span>The surface area of one side = 1 cm X 1 cm = 1 <span>cm2</span></span>

 

<span>There are 6 sides, total SA = 6 X 1 <span>cm2</span> = 6 <span>cm2</span></span>

 

<span>Volume = 1 cm X 1 cm X 1 cm = 1 cubic cm (1 <span>cm3</span>)</span>

<span>Surface to Volume Ratio = 6 <span>cm2</span>/1 <span>cm3</span> = 6 <span>cm2/cm3</span></span>


Larger cube (6 cm X 6 cm X 6 cm) 

<span>The surface area of one side = 6 cm X 6 cm = 36 <span>cm2</span></span>

 

<span>There are 6 sides, the total SA = 6 X 36 <span>cm2</span> = 216 <span>cm2</span></span>

 

<span>Volume = 6 cm X 6 cm X 6 cm = 216 <span>cm3</span></span>

 

<span>Surface to Volume Ratio = 216 <span>cm2</span>/216 <span>cm3</span> = 1 <span>cm2/cm3</span></span>

<span> </span>


8 0
3 years ago
What is it called when scientists examine how well other scientist follow the scientific method?
Phoenix [80]
I think the answer you are looking for is peer review.
3 0
3 years ago
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