Answer: The mesosphere starts at 31 miles (50 km) and extends to 53 miles (85 km) high. The top of the mesosphere, called the mesopause, is the coldest part of Earth's atmosphere, with temperatures averaging about minus 130 degrees F (minus 90 C). This layer is hard to study
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The global distribution of organisms and the unique features of island species reflect the evolution and geological change. Fossils. Fossils document the existence of now-extinct past species that are related to present-day species.
Answer:
Polymerase chain reaction (PCR) is used to make many copies of DNA .
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Answer:
A
Explanation:
DNA encoded all genetic information that has to be transferred from generation to generation
Answer:
it's a homozygous genotype