Is there any green belt around factory? Name the trees they are growing.

Name the green house gases.

Is there any tree without animals ?

Name few green house gases?

Is there any change in coldness and hotness of the air around us?

Read the paragraph given below and answer. Most of the plants are flowering plants. Their characters are quite remarkable. A sal tree grows in Himalayan mountains, a giant cactus in the Sahara desert Flowering plant possess

Is there any crop that grows continuously in a same field?

Is there any liquid transition element? If so name it.

Is there any liquid transition element? If so name it?

Is there any other name for purification of impure metal ?