15. If a person feels pressure on her bladder, then she is experiencing - o
A.)an external stimulus to stop drinking.
B.)an internal stimulus to drink more water.
C.)an external stimulus to release excess water.
D.)an internal stimulus to release waste.

Which of the following statements about c4 carbon fixation is not true? a c4 carbon fixation is an adaptation for plants exposed to high light intensityb. c4 carbon fixation occurs in more plants than c3 carbon fixation. c c4 carbon fixation is more common in areas of high temperatures than c3 carbon fixation. d. c4 carbon fixation occurs in the inner cells of a leaf rather than the entire leaf.

How do living things obtain phosphorus

Temperatures in ponds and lakes vary by season. select the best answer from the choices provided t f