Questions

___________ is the wearing away of the landscape by different agents like water, wind and ice.

The process of pollination by birds is also known as

Which of the following is a renewable source of energy?

In the following question, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option.

The big stone monument was the only __________ the lost traveller remembered.

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.

Whistle in the dark

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".

Since when (have to start) a business been so easy?

In the following question, a sentence has been given in Active/Passive voice. Out of the four alternatives suggested, select the one which best expresses the same sentence in Passive/Active voice. 
Sarla changed the curtains.

Sexual reproduction in Algae that takes place through fusion of two dissimilar size gametes is called?