Answer: B, C
Explanation: Scientists use radiometric dating of meteorites and analyze the impact craters on planetary body surfaces to learn about the age of the solar system and its planetary bodies.
When climbing a mountain, we can observe transitions in biological communities that are analogous to the changes in biomes at different latitudes.
They pollinate plants, which saves farmers work. Insects such as bees and butterflies help to pollinate plants.
Answer:
double helix, which is made up of a nitrogenous base, a five-carbon sugar (deoxyribose), and a phosphate group. There are four nitrogenous bases in DNA, two purines (adenine and guanine) and two pyrimidines (cytosine and thymine).
Explanation: