Which phrase best describes an ecosystem?

a. all living things and the places on earth where they are found
b. organisms interacting with each other and with nonliving things in a certain region
c. the variety of organisms on earth or in a particular area of the biosphere
d. a group of living things that can interbreed to reproduce

B

Explanation:

organisms intEracting with Each othEr and with nonLiving things in a cErtain rEgion

by using  production possibilities graph.  opportunity costs are key expenses in financial matters and are utilized as a part of registering money saving advantage investigation of a venture. such expenses, be that as it may, are not recorded in the record books but rather are perceived in basic leadership by processing the money costs and their subsequent benefit or misfortune.

united states government;