A.
contracts to move substances through the body
D.
breaks down food to acquire nutrients
Answer:
D
Explanation:
Pretty sure that's the correct answer.
In communities where zebra mussels have invaded we observed that the population of invertebrates, zooplankton, and phytoplankton they will decrease when in open water. The population of bottom-dwelling invertebrates which are in the littoral zone will increase.
Hypothesis shows the zebra mussels will affect the fish negatively that feed on plankton in the open water but affect positively the fish which feed on invertebrates which are in the littoral zones.
The predictions by following the invasion of zebra muscles show that the number and growth rate of fish species in open water will decrease in population whereas the number and growth rate of fish species in the littoral zone will increase in population.
They are the powerhouses of a cell and they act like the digestive system which takes in nutrients and breaks it down, then creates energy. Hope this helps!
;D
