The _of an ecosystem is based on whether the population in the system destroys the natural resources of that system.

How is the male reproductive system different from other body systems? it isn’t necessary to vital signs. it monitors other body systems, and adjusts if necessary. it transports items from one system to another. it is the only system that produces hormones in the male.

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

Penelope studies how the structure and function of the nervous system is related to behavior. she is a psychologist