life on the planet depends on the sun.Photosynthesizing green leaves of plants perceive and accumulate the energy of sunlight.

What



photosynthesis Photosynthesis is the process of creating the light organic compounds from inorganic.During this process, the solar energy is converted into chemical energy.Carbohydrates, proteins and fats are stored in the cells of green plants provide vital functions of all living beings on Earth.

Sugar - the main product of photosynthesis



most important product of photosynthesis is sugar produced in nature billion tons annually.The starch and various sugars contained a lot of energy.Thus, the accumulation of the organic mass and the storing of the energy contained in the organic matter is the main function of plants in nature.

constant absorption and accumulation of solar energy by green plants enhances the overall level of energy in the biosphere.The energy, once stored in the cells of plants, is actively used by man by burning wood, oil, gas and coal.

byproduct of photosynthesis - oxygen



Oxygen - a by-product of photosynthesis - currently occupies 21% of the volume of air.Every year he enters the atmosphere in an amount of 70-120 billion tons.Thanks to this animal (including man), bacteria, fungi and plants themselves can breathe and carry out vital processes.

At an altitude of 25 km above the Earth's surface from oxygen under the influence of solar radiation, ozone is formed.The ozone shield holds those ultraviolet rays that are capable of destroying living cells and detrimental effects on the body.

level of carbon dioxide in Earth's atmosphere



0,03% the volume of air in the atmosphere of carbon dioxide.It is formed during respiration, when decay and decomposition of dead bodies during fires, volcanic eruptions, the combustion of fuel.A huge amount of carbon dioxide absorbed by green plants, so that the level of CO2 in the atmosphere remains constant.

soil formation



Living beings consume organic substances green plants.Waste of their life fall on the earth's surface, decompose and form soil.Her fertility is dependent on the content of soil organic matter - humus.