Match sewage purification plant and sewage purification method 1. aerotank 2. mud trap 3. react...: ответ на тест 1056227 - Экология

In the picture you can see anaerobic sewage disposal plant, i.e. methane-tanks. The fuel obtained by means of anaerobic methane decomposition of organics is called …

In the picture you can see Cheboksary hydro-electric power plant. Electrical energy obtained from hydro-electric power plant located in plain areas can’t be considered an environmentally friendly kind of energy due to the fact that water reserves …

Rural population  tend cattle and small ruminants  close to zinc-lead enterprise. In the grazing land there is high concentration of lead (Pb). In ground waters (mine wells) the average concentration of lead reaches 0,6 mg/l. The concentration of lead (Pb) content in meat is 2 mg/kg,  in milk it is 0,3 mg/l, in bread – 0,6 mg/kg, in potatoes – 1 mg/kg. Person’s daily requirement for products is as follows: drinking water – 2 l, meat – 0,1 kg, milk – 0,8 l, bread – 0,1 kg, potatoes – 0,3 kg. Admissible  daily lead (Pb) intake  recommended by World Health Organization equals 0,43 mg. Actual lead (Pb) daily intake coming with water and food is ______ mg. (Give your answer as a whole number.)

Ecological functions of forests are as follows …

Match the dates and the events
1. United Nations Conference on the Human Environment in Stockholm.
2. World Charter for Nature adopted by United Nations member nation-states.
3. United Nations Conference on Environment and Development in Rio de Janerio.

Set up a correspondence between atmosphere constituent gasses and digital indicators of their concentrations
1. Oxygen
2. Carbon
3. Nitrogen