What do we see during night?

Which is the common means of transportation in cities?

The major land forms on earth are classified into:

We can see big buildings, factories and houses in:

Deforestation refers to:

If there was no Sun:

The  social communities with considerable face-to-face interaction among members are called:

 The sun sets in the:

We can see mud roads and the streets  which are narrow and winding in the:

Which is a clean mode of transport?