Observing the size of a herd of elephants that are all the same species would be an observation at the level.

a. ocommunity

b. ecosystem

c. population

d. individual

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this

What is the main reason that attitudes are more often revealed in spoken rather than written language? a. in writing, we try to put the "best face" on what we write. b. we speak far more often than we write. c. in writing, we can more easily conceal our attitudes. d. in spoken language, we are often careless in our use of words.

Why is a mushroom considered a heterotroph