The portion of a persons' total body weight that is composed of muscles, tendons, bones, and connective tissue is called:

Select the correct answer. which term do biologists use to describe the average number of individuals of a species per unit area? a. carrying capacity b. population density c. minimal viable population d. survivability curve

The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important

Why is it important to study each branch of earth science?