How are earth principal biological systems being depleted?
Answers
Answer:
The biological systems of different environments in our planet ,are constantly degrading and depleting with the every passing decades. The main reason of this depletion or degradation is the human works and interactions with the environment.
Explanation:
Answer : There are four principal biological systems of the Earth - (1)fisheries (2) forests (3) grasslands (4) croplands, as pointed by Mr Lester R Brown. Unfortunately, the human claims on these systems as reaching points, where their productivity is getting impaired. The protein hungry world is over-fishing everyday. In poor countries, local forests are being destroyed everyday to get firewood for cooking. The growing use of dung for burning deprives the soil
of an important natural fertilizer. The forests precede mankind and deserts