If later is was 100 million years ago, later b would be 200 million years ago (because it is 100millions years prior to a). And therefore layer c must b 300 million years ago.
Answer: This answer is for all the questions: Chargaff's rules state that DNA from any species of any organism should have a 1:1 stoichiometric ratio of purine and pyrimidine bases (i.e., A+G=T+C) and, more specifically, that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine.
Explanation:
Answer:
I believe the answer to be E because it says atom and it is asking what is false about elements.
Explanation:
<span>Which of the following is true of all greenhouse gases?
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C. THEY TRAP ENERGY IN THE ATMOSPHERE.
They are not naturally occurring. They are the result of human activity like using electricity, burning fuel, etc.
They don't exist in fixed quantities and they don't reflect incoming radiation. The volume of greenhouse gases emitted depends on the activity done. It also does not stay in one place, it moves around and combines with other green house gases; trapping heat in the atmosphere and making the Earth warmer.
