Of the following weather factors, which is most important in determining the plant and animal populations that can exist in an area?

a. air pressure

b. cloud cover

c. humidity

d. temperature

Name the type of chemical that speeds up digestion

What is the ecological role of food chains and food webs

Select the correct answer. which statement applies only to the axial skeleton, not the appendicular skeleton? a. it contains a pivot joint. b. it has muscles attached that work in pairs. c. it contains red bone marrow. d. it possesses fossa for bone articulation. e. it protects the heart and lungs.