the Place of a green plant in nature economy. The summary

you are: the Place of a green plant in nature economy

Almost all forms of a life on the Earth receive energy necessary for them expressly or by implication from the Sun, i.e. From reactions of thermonuclear synthesis proceeding in it in which result hydrogen turns to helium. in the course of this synthesis the weight part passes in the energy radiated in a space. The small share of this energy reaches surfaces of the Earth and is absorbed here by a chlorophyll and the auxiliary pigments containing in green plants. Difficult chemical mechanisms in hloroplastah cages of green plants provide storage of this energy in the form of carbohydrates [Сx (Н2) at], formed of carbon dioxide (СО2) and waters (Н2О) in the course of photosynthesis; as a by-product of this process oxygen is allocated. when then carbohydrates are oxidised in the course of breath to СО2 and Н2 About, the energy reserved in them is liberated and can be used an organism.

As the person eats either as green plants or products of an animal origin, and food the animal are served by the same plants, the population of the Earth is limited finally to total quantity of the saved up products of photosynthesis. now on the Earth lives more than 4 billion persons. At modern rates of increase of the population - about 70 million a year - the population should double about each 35 years. Even if we also will manage to stimulate somehow growth of plants, to raise efficiency of photosynthesis and to expand arable lands, and then it is difficult to hope for that the increase in efficiency of agriculture kept up with population growth. on this and for other reasons eventually we will be compelled to limit a population of the Earth somehow.