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 » Science Earth Science

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 » Science Environmental Science Pollution

Plastic is extremely durable and takes an incredibly long time to biodegrade. The toxic runoff from plastic leachate harms groundwater resources underneath landfills, and the toxins absorbed from microplastics poison pla... More » Science Environmental Science Human Impact
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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 » Science Environmental Science Pollution

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 » Science Biology Botany

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 » Pets & Animals Marine Life Fish

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 » Pets & Animals Pets Aquatic Pets