Nucleic acids are composed of: O A. A phosphate group, a pentose sugar, a carboxylic acid
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O B. A pentose sugar, a nitrogen base, an R group
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O C. A nitrogen base, an amino group, a carboxylic acid
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O D. A phosphate group, a pentose sugar, a nitrogen base

Which of the following occurs most often in a population when genetic variation and overproduction are present? some organisms have a lower reproductive success than others. some organisms have a higher reproductive success than others. some organisms have no reproductive success. some organisms do not have genetic variation.

As a result of wildfires, in grasslands. a) tree growth increases b) grass growth increases c) soil quality decreases d) invertebrate variety decreases

Which list is in order from simplest to most complex? a bacteria - virus - plant - protist b protist - bacteria - virus - plant c virus - bacteria - plant - protist d virus - bacteria - protist - plant