Through photosynthesis, green plants play a very important role in the life on Earth.
They convert solar light energy and accumulate it in the form of organic compounds.
As a by-product of photosynthesis oxygen is released into the atmosphere.
Life on the planet depends on the sun. Photosynthetic green leaves of plants perceive and store energy of sunlight.
What is photosynthesis
Photosynthesis is the process of creation onlight organic substances from inorganic. During this process, solar energy is converted into chemical energy. Carbohydrates, proteins and fats stored in the cells of green plants provide vital functions of all living beings on Earth.
Sugar - the main product of photosynthesis
The most important product of photosynthesis issugar produced in nature billion tons annually. The starch and various sugars contained a lot of energy. Thus, in the accumulation of organic matter and the storing of energy contained in the organic materials is the main function of plants in nature.
The constant absorption and accumulation of energysunlight 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.
A by-product of photosynthesis - oxygen
Oxygen - a byproduct of photosynthesis -currently occupies 21% volume of air. Every year, he goes into the atmosphere in an amount of 70-120 billion tons. This animals (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 fromoxygen under the influence of solar radiation, ozone is formed. The ozone shield holds those ultraviolet rays that can destroy living cells and detrimental effects on the body.
The level of carbon dioxide in Earth's atmosphere
0.03% volume of air in the Earth's atmosphereIt is carbon dioxide. It is formed during respiration, when putrefaction and decomposition of dead bodies, during fires, volcanic eruptions, from fuel combustion. A huge amount of carbon dioxide absorbed by green plants, so that the level of CO2 in the atmosphere remained constant.
formation of soil
Living beings consume organic mattergreen 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.