A square mile of tropical rainforest contains 36 mammal species. A square mile of tundra contains 4 mammal species. What characteristic of ecosystems is being described above?

A) succession

B) abiotic factors

C) producers

D) biodiversity

What can be found in every skeletal muscle? a. nerves, bones, cartilage, and connective tissue b. tendons, cartilage, nerves, and blood vessels c. muscle fibers, nerves, connective tissue, and blood vessels d. tendons, nerves, blood vessels, and bones

Which beat describes the brain stem

What is a dendrite and what does it do?