The ocean holds about 97 percent of the Earth's water; the remaining three percent is distributed in many different places, including glaciers and ice, below the ground, in rivers and lakes, and in the atmosphere. According to the U.S. Geological Survey, there are over. of water on the planet.
Phytochemicals are compounds that are produced by plants (phyto means plant). They are found in fruits, vegetables, grains, beans, and other plants. Some of these phytochemicals are believed to protect cells from damage that could lead to cancer.
The term biogeochemical tells us that biological, geological and chemical factors are all involved. The circulation of chemical nutrients like carbon, oxygen, nitrogen, phosphorus, calcium, and water etc. through the biological and physical world are known as biogeochemical cycles.he most well-known and important biogeochemical cycles, for example, include. 1  the carbon cycle, 2  the nitrogen cycle, 3  the oxygen cycle, 4  the phosphorus cycle, 5  the sulphur cycle, 6  the water cycle, 7  and the rock cycle.