Answer:
1.It produces silk which is a high quality fibre
2.to destroy the gelatinious substance inside cocoon so as to obtain silk thread
3.To avoid it from hatching
4.they carry pollen grains while roaming plant to plant and help in cross pollination
Answer:
The correct answer is - Friction occurs irrespective of the state of the matter.
Explanation:
Friction is the force that takes place when there are two different surfaces slide or moves across one another and causes a resistance between surfaces. The friction always takes place opposite direction to the other surface direction of moving.
Pushing a book on a table, pulling a heavy cart on road all are examples of friction. The friction that occurs in liquids and gases is called fluid friction. Thus, the friction takes place irrespective of the state of the matter.
Photosynthesis is the process by which plants make their own foods, without this process the plants would die.
Answer: True
Explanation:
This was a bacterial fermentation that produced acetone, needed for cordite (explosive) manfacture. Species of Clostridium were used.
Answer is C) - Nuclear power produces no carbon dioxide emissions unlike coal or oil power production.
Nuclear power use natural Uranium to make energy and water is used as cooling process. Hence, nuclear power production uses natural resources.
The waste is very harmful in nuclear power production. That should be managed by a proper way.
Although nuclear power can produce a huge energy, the availability of nuclear power is less than coal and fossil fuels.
But the greatest benefit of nuclear power is, it does not emit carbon dioxide which contributes to global warming.
