How can a growing animal get calcium to make new bone tissue?

Question

 from study island in the science category for eighth graders. Ecosystems and the cycle of matter. I need to get it right.

Answer 1

Most living animals as well as humans get calcium from consuming foods that are rich in calcium such as many green plants. Humans also can get calcium from an animal’s milk and the products made from milk such as cheese and yogurt. Most animals don’t consume milk as a adult, so green plants are their main source of calcium.