Your metabolism is the muscle activity that burns calories.
The base of the pyramid is composed of species called autotrophs, the primary producers of the ecosystem. All other organisms in the ecosystem are consumers called heterotrophs, which either directly or indirectly depend on the primary producers for food energy.
The three parts of ATP are the adenine base, ribose and the phosphate groups.
Answer is A. arranged in regular, repeating patterns
Aldosterone is secreted in response to changes in
C. blood pressure