Question 8.
How are Earth’s principal biological systems important?
Question 9.
How do fisheries, forests, grasslands, and croplands form the foundation of the global economic system?
Answers
Answer 8:
Mr. Lester R Brown in his thoughtful book, The Global Economic Prospect, points out that earth’s principal biological systems are four – fisheries, forests, grasslands, and croplands. They form the foundation of the global economic system. They supply our entire needs of food, besides providing virtually all the raw materials for industry except minerals and petroleum derived synthetics.
Answer 9:
Mr. Lester R Brown has pointed out that the earth’s principal biological systems, fisheries, forests, grasslands, and croplands, form the foundation of the global economic system. In addition to supplying our food, these four systems provide virtually all the raw materials for industry except minerals and petroleum-derived synthetics. Fish are a major source of proteins required for growth. In developing countries, local forests are being cut to provide firewood for cooking. Croplands are required for growing crops which are essential for nutrition. Grasslands provide fodder for various domesticated animals, which provide many items consumed or used by mankind. Thus, these four form the foundation for the global economic system.
Answer:
8.Earth’s principal biological systems important because They form the foundation of the global economic system. They supply us food. They all provide all the raw materials for industry except minerals. Human demands on these systems are increasing to a point where their productivity is impaired.
9.They are fisheries, forests, grasslands and croplands. They are the foundation of the global economic system. They supply us food and provide raw materials for industry, except minerals. ... Grasslands are being converted into wastelands and deserts due to over-grazing
Explanation: