Question

1.  What is bad ozone?

2.  Differentiate between natural and artificial ecosystem.

3.  Why are plastic bags non-biodegradable?

4.  Name two decomposers and two producers.

5.  Why are pesticides considered as pollutants despite being useful to the farmers?

6.  Name two artificial eco-system.

7.  What is the role of consumers in the food chain?

8.  Give one advantage and one disadvantage of ozone.

9.  What is an ecosystem? Mention its components.

10.  Difference between biodegradable and non-biodegradable substance.

11.  Why are green plants called producers?

12.  What are the two main components of our environment?​

Answer 1

Answer:

1. Ozone is a gas that occurs both in the Earth's upper atmosphere and at ground level. ... The layer closest to the Earth's surface is the troposphere. Here, ground- level or “bad” ozone is an air pollutant that is harmful to breathe and it damages crops, trees and other vegetation. It is a main ingredient of urban smog.
2. A natural ecosystem is the result of interactions between organisms and the environment. ... An artificial ecosystemis not self-sustaining, and the ecosystemwould perish without human assistance. For example, a farm is an artificial ecosystem that consists of plants and species outside their natural habitat.
3. Plastic bags are non biodegradablebecause, they can't dissolve in the soil and plastic contains many chemicals in it which will also pollute soil and water.Non biodegradable are materials which doesn't dissolve in soil or water andplastic bags don't dissolve

Answer 2

Answer:

What is Bad Ozone?

$\dashrightarrow$Ozone when present in the Earth's surface is very poisonous gas. Hence called bad.

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Why are plastic bags non-biodegradable?

$\dashrightarrow$Plastic bags are non biodegradable because, they can't dissolve in the soil and plastic contains many chemicals in it which will also pollute soil and water.

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Why are pesticides considered as pollutants despite being useful to the farmers?

$\dashrightarrow$ Pesticides kill insects and pests thereby protect the crops but these pesticides remain on the crops which enter the food chain and get accumulated in the organisms at the top most tropic level that causes diseases.

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