Nutrition in Animals — Science STD 7 — Question

Polar bears have two thick layers of ___________ to protect them from extreme cold.

What do you mean by the statement, "car is moving with the speed of 50Km per hour"?

Pahell wants to know whether mosquitoes, bed bugs, lice and leeches that suck our blood are also parasites.

In a mercury thermometer, the level of mercury rises when its bulb comes in contact with a hot object. What is the reason for this rise in the level of mercury?

Write two basic substances which we use in our daily life.

What happens to the current in a circuit at the time of short circuit?

What term is used for the following process? Washing of sheep’s fleece to remove dust, dirt, dried sweat and grease.

What constitutes waste water?

What do you mean by absorption in terms of digestion of food?