The answer is D. In DNA molecule, the thymine is paired with adenine. So the percentage of A equals to T, 30%. And guanine is paired with cytosine. The percentage of G and C are equal. So the percentage of G is 20%.
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Portals of entry are the sites where micro-organisms can enter a host and reproduce, causing diseases or infections. There are various portals of entry in the human body. This can include the skin, our mucous membranes, and even our respiratory and gastrointestinal tracts. Portals of exit are where these micro-organisms leave and spread to other individuals. Portals of exit include coughing, sneezing, and some of our bodily fluids.
Explanation:
The unit of evolution is the population. A population consists of organisms of the same species that live in the same area. In terms of evolution, the population is assumed to be a relatively closed group. This means that most mating takes place within the population.
Volumes.
If you put equivalent volumes in a bag, where both weigh the same, the density might get equal.
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