Can materials diffuse through a membrane in both directions at the same time

Defend or refute the argument that the government has too large a presence in the agriculture industry.

List the advantages and disadavantages of the switch from persistent chlorinated hydrocarbon pesticides (such as ddt) to nonpersistent organophosphate pesicides. have the benefits of the switch outweighed the disadvantages? explain.

In the diagram below, the northern hemisphere would be in what season at position a a. fall b. winter c. summer d. spring