Eutrophication occurs due to excessive use of these compounds, which can lead to having dead zones in bodies of water.
Dead zones refers to areas with decreased levels of oxygen in the bodies of water caused by eutrophication and other factors. These affect the marine life negatively as fishes are also dependent on oxygen.
Eutrophication is defined as the presence of excess minerals in the water, which causes dense growth of plants and leads to depletion of oxygen that make the animals in the water to die.
Answer:
d. acid rain and ozone pollution
In the stone age people start to carve pictures of animals and plants on the wall, Another answer may be early civilization Where Natives would sculpt and carve statues as idol's