I am sure it is the first answer, to speak up when you need information restated or explained.
Answer:
B
Explanation:
Molecules move across the plasma/cell membrane through diffusion. ... A plant wanting to get those ions will need to use energy, and usually enzymes are needed to carry those nutrients through the membrane and into the plant.Or they tend to move to place with higher concentration
Answer:
C
Explanation:
Synergistic interaction means that the effect of two chemicals taken together is greater than the sum of their separate effect at the same doses. An example is pesticide and fertilizer
