By Dana Desonie
Для детей от 12-ти лет
Students find out about the risk to the Earths biosphere and to biodiversity because of human actions similar to toxins, international warming and chemical use, and what equipment are getting used and built to aid decrease the effect at the surroundings and animals. contains full-color photos and illustrations, sidebars, word list, learn resources, writer profile and index.
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Extra info for Biosphere: Ecosystems and Biodiversity Loss
Because trees lose moisture 45 46 biosphere through their leaves, the trees in a dry forest are mostly deciduous and shed their leaves during the drought season. This opens the can- opy so sunlight can reach the ground, allowing the growth of thick underbrush. Trees in broadleaf dry forests include teak and mountain ebony. Where groundwater is accessible, most dry forest trees may be evergreens. Monkeys, large cats, parrots, and ground-dwelling birds are common dry forest wildlife. Ocean Oceans cover 71% of the Earth’s surface; they are not uniform, but vary greatly in temperature, pressure, salinity, and nutrient level.
By contrast, temperate rain forests have between 6 and 30 species per hectare, and three or four species account for almost all trees. Tropical rain forest biodiversity extends to animal life. 6 square kilometers) of rain forest. One-third of all the world’s bird species live in South America. Each hectare of rain forest has tens or even hundreds of vertebrate species. Madagascar, an island off the eastern coast of Africa that is smaller than the state The Amazon Rainforest at the Tambopata Research Center on the Tambopata River in the Madre de Dios, Peru.
Angiosperms are found wherever plant life is possible, even in shallow fresh and saline (salty) water. Plants are the source of food energy for nearly all animals, and they produce oxygen, the essential gas. People use plants for wood, fibers, pharmaceuticals, oils, latex, pigments, and resins. Ancient plants form fossil fuels, such as petroleum and coal, which are the most important energy source for modern society. Fossil fuels are hydrocarbons, organic compounds composed of hydrogen and carbon.