Higher metabolic rates during growth and development periods like adolescence and pregnancy are due to:

Alonger periods of rest
Bgetting older
Crapid bodily changes
Dthe amount of food consumed

Verified Answer :

Two of the characteristics of all living things are 1) growth and development (as seen in adolescents and pregnancy) and 2) maintaining homeostasis --- to maintain homeostasis during these periods of rapid growth and development, metabolism must be upkept as well. They are all related.