Water: A Precious Resource — Science STD 7 — Question

Paheli and Boojho have to cover different distances to reach their school but they take the same time to reach the school. What can you say about their speed?

Name the process by which energy is obtained by a living organism.

Why are organic matters added to the soil?

Why flowers are generally so colourful and fragrant?

Dried is used as manure.

Note the changes in shape, size or state : Drying wet clothes

State whether the following statements are True or False. Correct the false statement: Since very few prey are available, polar bear does not need to have strong sense of smell.

Who was M.K. Vainu Bappu?

Define speed.

During rainy season, what do we use to protect ourselves from rainwater?