<span>In DNA adenine (A) pairs with thymine (T) & cytosine (C) with guanine (G), so if 28% is guanine, then there is also 28% of C, totaling 56%. This leaves 44% which must be split evenly between A and T, so there is 22% thymine (as well as 22% adenine)</span>
The negative impact humans could have on an ocean ecosystem is pollution, which can lead to a mass extinction on the wildlife.
answer:
it took 17,000 years for CO2 to go from 200 to 300 ppm.
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The correct option is A.
The DNA from one specie differ from the DNA of another specie on the basis of their base ratio. The base ratio refers to the percentage of purine to pyrimidine in a DNA molecule. The base ratio is the one that is responsible for the variability that is observed in chromosomes from different species.
