What is most likely to happen to a population of small, plant eating
fish in a small river if the water level of the river drops several feet for an
extended period? Explain your answer.

PPLLLEASE HELP

Fish use aquatic plants for spawning and nursery areas, as well as for food. Some fish and their fry eat aquatic plants and the algae and small animals that are attached to the stems and leaves. Aquatic plants also offer refuge from predators such as larger fish and water birds.

Submersed aquatic plants also generate oxygen, for fish and other submersed life. But like most environmental factors, balance can be fleeting. Overabundant submersed aquatic plant growth can consume too much oxygen and suffocate fish. One of the worst recorded fish kills in Florida public waters occurred in hydrilla-covered Rodman Reservoir in 1985. Several cloudy days combined with dense hydrilla depleted the oxygen and caused the death of more than 8 million fish in this 10,000 acre reservoir.

Were it not for concerted management of invasive aquatic plants, especially the floating water hyacinth and water lettuce and submersed hydrilla, there wouldn't be much fishing in Florida. When invasive plants infest a lake or river, there are serious declines in the fish population.

Explanation:

Hope this helps

1. (1.2kw)x(15/60hours) = .3kwh --> a

2. (5kw)x(90/60hours)x(8cents/kwh) = $0.60 --> d

3. microwave --> 1200 watts = (1.2kw)x(6/60hours) = .12kwh

coffee-maker --> 900 watts = (.9kw)x(10/60hours) = .15kwh

therefore, it requires more energy for the coffee-maker to do the same amount of work.

so the answer is a.

ya the other dude is right