Which of the following gases do termites significantly contribute to the atmosphere?

Pollution in car exhausts can be controlled by using:

During the process of photosynthesis , plants use energy from the:

Which type of water is made drinkable by desalination?

Glucose + Oxygen → CO₂ + H₂O
Which process is this ?

By how much percentage is the amount of fresh water on the earth less than that of the total?

Where do animals get their  nitrogen from?

When animals and plants die and rot away or buried,they slowly form:

Which of these renewable resource is used to generate electricity?

Methane is produced by: