12. In hot environments, when plants begin to lose water, some will close their stomata (pores) to prevent water loss.

the answer is c because it is most logical.

answer; behavioral neuroscience;

scientific consensus is : a general agreement among scientists about a scientific idea.

even though consensus implied general agreement, it doesn't mean unanimity. for example, scientists generally agree that meteor caused dinosaur's extinction. though this may not be proven yet, but it considered a consensus.

hope it