Which of the following act as "nature's scavengers"?
Correct answer: B. Microorganisms
- A. Insects
- B. Microorganisms
- C. Man
- D. Animals
Explanation
Microorganisms (bacteria and mold) are decomposers of the ecosystem. They feed upon dead decaying organisms (both plants and animals) and break them into simpler compounds. These are released free in the atmosphere and are utilized by producers for the synthesis of their food materials. They are called nature's scavengers as they are consumers of dead matter.
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About Man and His Environment
Ecosystems include biotic and abiotic components, food chains and webs, energy flow, nutrient cycles, populations and ecological relationships. Pollution and conservation cover air, water, soil and noise pollution, their effects on organisms, biodiversity loss, protected areas, sustainable resource use and methods for reducing environmental damage.
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