The scientific study of interactions among organisms and between organisms and their environment is . A: biosphere
B: ecology
C: trophic level
D: community

What layer of the atmosphere is directly above the troposphere?

What is the mass of 8 moles of sodium atoms

Which of these is not an example of chemical weathering? a. iron-rich mineral rusting b. feldspar turning into clay c. limestone reacting with acid d. granite breaking up into sand