A) The data to support his hypothesis, so he should investigate if the same change happens in the density of solid water.
Answer:
Heritability is important for natural and artificial selection because a trait must be heritable for them to take place. ... Variations that exist in every population are the basis for natural selection. The differences in organisms come from different genetic material.
Explanation:
Nutrients is what is absorbed through the small intestine
It helps get rid of carbon dioxide.
Took me a while to understand any of this XD