Question

What do animals such as clams and oysters extract from the water to build their shells?(1 point)
Responses

silicon
silicon

carbon
carbon

fructose
fructose

hydrogen

Answer 1

Animals such as clams and oysters extract **calcium** and **carbon** from the water to build their shells. However, among the provided options, the correct response would be **carbon**, as it is a fundamental element found in the carbonate compounds (like calcium carbonate) that shells are typically made of.

So the answer is **carbon**.