The danger posed to fish in an aquarium by an overpopulation of bacteria caused by an algal bloom is most likely a A. decrease in water temperature.

B. reduction in oxygen levels.

C. decrease in food supply.

D. removal of minerals.

answer; i believe that the correct answer is (light);

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands

the food storage products of chrysophytes are oils or the polysaccharide laminarin.   formerly classified as plants, the chrysophytes contain the photosynthetic pigments chlorophyll a and c all but the yellow-green algae also contain the carotenoid pigment fucoxanthin.