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DaniilM [7]
2 years ago
5

How do I identify sample, independent and dependent variables?

Biology
1 answer:
Mamont248 [21]2 years ago
4 0
A sample is a random, unbiased selection out of a larger group. An independent variable is one that is changed as to see how it will affect the dependent variable in an experiment. 
Hope that helped.
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3 years ago
How is it possible that over 20 million living organisms on the planet are made up of only 5 types of nucleotide based arranged
almond37 [142]

Answer/Explanation:

The DNA in all living organisms is made up of 4 bases, adenine, thymine, guanine, cytosine. The RNA replaces thymine with uracil, making 5 types of nucleotide. The number of nucleotide pairs in a genome can range from half a million up to 100,000 million - meaning there are an exponential number of combinations of these 4 bases.

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Since we are dealing with many millions of nucleotides, there are essentially infinite combinations of nucleotides, giving rise to the variation that produces over 20 million organisms on the planet.

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What is the geologic time scale?
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I believe the answer is most likely

C): 4

I hope this is correct and helps

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