D. Answer the following questions in brief.
1. Why should we segregate different types of wastes?
2. Write the meaning of the term 'vermicomposting'.
3.
4.
Which component of air gets ‘used-up during the process of photosynthesis:
Suggest any five activities that can help to save the environment.
How does nature maintain a balance, between the amounts of oxygen an
carbon dioxide, in the atmosphere?
5.
E. Answer the following questions.
1. Distinguish between-
(a) autotrophs and heterotrophs
(b) decomposers and scavengers
State the difference between biodegradable and non-biodegradable mate
Give one example of each.
Answers
Answer: 1 segregation of wastes helps in easy disposal and helps to reduce environmental pollution
2 vermicomposting is a method of preparing compost with the helps of earthworms
4 co2 gets used up during photosynthesis whi h gets reduced to glucose
5 autotrophs are the organism which are able to prepare their own food with the help of sunlight and co2
Heterotroph are ones whi h cannot prepare their own food and are dependent on autotroph for food
Decomposers are the organism that cause decomposition and breakdown of dead plant and animal matter
Scavenger are the organisms which feed on hurt animals or left over prey
Biodegradable substances are the ones which can be degraded naturally in the environment by microorganisms
Example vegetable waste
Non biodegradable are the substance which cannot be decomposed by microbial activity example plastic DDT etc
Explanation:
Answer:
Answer: 1 segregation of wastes helps in easy disposal and helps to reduce environmental pollution
2 vermicomposting is a method of preparing compost with the helps of earthworms
4 co2 gets used up during photosynthesis whi h gets reduced to glucose
5 autotrophs are the organism which are able to prepare their own food with the help of sunlight and co2
Heterotroph are ones whi h cannot prepare their own food and are dependent on autotroph for food
Decomposers are the organism that cause decomposition and breakdown of dead plant and animal matter
Scavenger are the organisms which feed on hurt animals or left over prey
Biodegradable substances are the ones which can be degraded naturally in the environment by microorganisms
Example vegetable waste
Non biodegradable are the substance which cannot be decomposed by microbial activity example plastic DDT etc
Explanation: