Dr. K C Trikha and N K Sehgal Solutions for Chapter: Our Environment, Exercise 1: Something to know

Plastic is _____ as it cannot be broken down into simpler substances in nature. (biodegradable/non-biodegradable)

The flowers of the _____ bloom with sunrise and close after sunset. (Moon flower/Morning glory)

State the difference between biodegradable and non-biodegradable materials. Give one example of each.

How does the decomposition of dead animals turn out to be useful?

Why is Rainwater harvesting a ‘ray of hope’ for overcoming the present ‘scarcity of water’ in cities?

Why do buffaloes cool themselves in water during summer?

Draw a diagram that shows the relationship between the biotic and the abiotic components of the environment.

Solve the following crossword puzzle with the help of given clues.

Across:

a. Do not make their own food.

b. Non-living components.

c. Meat eaters.

d. Vulture is a _____

e. Compost prepared by worms.

Down:

f. Plant eaters.

g. Morning glory.

h. A desert animal.

i. Decomposable material.

j. Helps in the recycling of minerals.