What would most likely happen to fish in a pond with low levels of dissolved oxygen? there is less algae for fish to eat. fish populations will grow out of control. fish will experience difficulty breathing. fish will release more fecal coliform into the water.

Fish will experience difficulty in breathing.

Explanation:

Oxygen is a necessary element that is required for respiration in plants, animals and other organisms. It is necessary for cellular metabolism. It helps in breakdown of food into simple substances.

According to the given situation, the fish will experience difficulty in breathing is the correct option. This is because of the fact that the dissolved oxygen is necessary for respiration and survival of aquatic animals in water habitat. In the absence of dissolved oxygen the fish or any other aquatic animal will not survive.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.