1. The environments on Earth are constantly changing. What must occur in order for individual organisms within an environment to survive?
A. They must be larger than other organisms.
B. They must adapt or die.
C. They must mate with others of their kind.
D. They must know where the water is.

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.

'which of these statements about the scientific method is not true? all experiments must follow the same number of steps in the procedure. experiments may be repeated several times. some unexpected results can be beneficial. experimental results may or may not support the hypothesis.

Pulmonary arteries carry highly oxygenated blood. true or false?