Which of the following does NOT describe catalysts? A
They are usually proteins.

B
They increase the speed of a chemical reaction.

C
They are permanently altered in a chemical reaction.

D
They are substrate specific.

hmmm in my view b are the answer

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.

explanation:

the universal gravitation equation. since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. if the mass of one of the objects is doubled, then the force of gravity between them is doubled.