D. Answer the following
1. Why do animals migrate?
2. Name the breathing organ of a Prawn and b. Cockroach
3. Why petroleum is called black gold?
Which rock is used to pave roads?
5. Write one use of coal.
Answers
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Answer:
1.Animals migrate in search of food, shelter and suitable weather .
Answered by
1
Answer:
1. Animals usually migrate in search of food, and suitable environment to breed and bring up there young ones.
2. Prawns breath by gill like structure present outside the body whereas cockroaches breath via the system of tubes connected to spiracles.
3. Petroleum is referred to as Black Gold.
When the petroleum is drilled from the ground in the liquid form, it is referred to as crude oil. This name black gold itself is an indication that it is very vital to humans. Because of its oil and worth, people refer to it gold.
4. Limestone.
5. Coal is mainly used for power generation.
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