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Nutrient water pollution causes an overgrowth of algae and microscopic plants, while toxic pollutants in water can put plants under stress or even kill them. Whether the pollution has a positive or negative effect on pla... More »

Water pollution occurs when water is contaminated with chemicals and foreign substances that are harmful to humans, plants and animals. Water pollutants include chemical contamination from waste sites, chemical wastes fr... More »

The effects of air pollution include acidification, eutrophication, ground-level ozone and particulate matter. Acidification occurs during a chemical reaction with air pollutants that causes acid rain, and it affects the... More »

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River pollution comes from a variety of different sources, including agricultural operations, industrial discharge, wastewater treatment plants and storm water runoff, that carry pollutants into waterways. Sources are cl... More »

Common carp eat insects, aquatic worms, earthworms, snails, crayfish, rotifers, mussels, water plants, algae, dead plant parts and fish eggs. They skim the bottoms of bodies of water, sucking in food and mud then spittin... More »

In oxygenic photosynthesis, cyanobacteria and the chloroplasts of plants and algae turn carbon dioxide, water and photons into carbohydrates and free oxygen. Only some of this oxygen is used by the organism; the rest is ... More »

Ideally, pet oscar fish should be given a diet similar to the one they have in the wild, namely insects, small shrimp, crayfish, catfish, fruit that has fallen into the water, algae and plants. In the wild, the latter tw... More »

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