Fossil evidence suggests that whales evolved from land mammals. using comparative dna techniques, scientists have also suggested that whales are related to hippos. how could comparing amino acid sequences support the theory of evolution?

significant amounts of nitrogen oxides, carbon monoxide, and other pollution

explanation:

passenger vehicles are a major pollution contributor, producing significant amounts of nitrogen oxides, carbon monoxide, and other pollution. in 2013, transportation contributed more than half of the carbon monoxide and nitrogen oxides, and almost a quarter of the hydrocarbons emitted into our air.

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answer; /// i believe that the correct answer is (50%);

the answer is: metamorphic rocks often show the presence of fossils, also a

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