Question

0.3 Answer the following question 30 to 40 words. (2 marks each) (A
1. What is Viviparous animal? Give Example.
2. Explain deforestation and its causes.​

Answer 1

Among animals, viviparity is development of the embryo inside the body of the parent. This is opposed to oviparity which is a reproductive mode in which females lay developing eggs that complete their development and hatch externally from the mother.

Causes of Deforestation: Direct Causes. Direct causes of deforestation are agricultural expansion, wood extraction (e.g., logging or wood harvest for domestic fuel or charcoal), and infrastructure expansion such as road building and urbanization. Rarely is there a single direct cause for deforestation.

Answer 2

Answer:

1) Animals that give birth to offspring are called viviparous. In viviparous animals, both fertilization, as well as the development of the embryo, takes place inside the female reproductive system.

Examples of Viviparous Animals

Human beings, dogs, cats, elephants, etc are few examples of viviparous animals

2) Clearing of forests(by cutting down forest trees)over a wide area is called deforestration.

Causes of deforestation -

1. Forests are cleared in order to obtain land for urbanisation and industrialisation.

2. Forests are destroyed to clear land for cultivation of crops and cattle grazing.

3. Trees are cut down to be used for

firewood.

4. Trees are also destroyed due to natural calamities like earthquakes, tsunami

hope it help