<span>Scientific theories are useful because they help explain phenomena in the natural world that we previously had no or an incorrect understanding of. They are also useful because they are provisional, and so they change and develop as we gain more knowledge.</span>
The answer is D. Perform photosynthesis
The answer is B) A Eukaryotic animal
Answer:
b
Explanation:not surre but it shoulb it
D, B
Algae will increase since the fertilizer has chemicals that will set with the water.
Toxic chemicals will rise since the fertilizer was made in a factory.
Not sure about fish tho because the lake can refill it's life after a while and the chemicals can work as a counter measure.