true or false, a concentration gradient is the difference in the concentrations of a molecule across two distinct areas, such as a cell membrane

What does the term "deforestation" mean? what landform are we studying that deforestation is impacting greatly in brazil? describe how and why this is happening. plz me!

In the wake of the civil war, compared to the south the north had sustained very little destruction. had to create a new labor system. had more economic challenges. had to repair damaged property.

In what ways are some local executive branches structured in a similar manner to state executive branches, and in what ways are some structured differently?