What is the concentration where the reaction rate is maximized the active sites of the enzymes are all used adding more substrate does not increase the rate of reaction

Point of saturation. When enzymes are saturated, we say that to mean that their active sites are all completely occupied.

answer;

c. a tree whose roots are surrounded by wet sand.

explanation;

water stress is an important factor limiting the growth and productivity of forests.water stress is the most often cited cause of poor survival and growth of woody landscape plants.

-insufficient soil moisture is the most common form of water stress, but excess moisture that leads to poor soil aeration (hypoxia) can also result in reduced plant vitality. a tree whose roots are surrounded by wet sand would be least likely to experience water stress.