Water gets polluted by:
Dumping garbage in water bodies
Smoke from vehicles and factories
Chemicals getting thrown into the soil
Burning garbage outdoors
What is essential for the growth of a plant?
Water
Chemicals
Nitrogen
Water vapour
Natural resources have to be used carefully because:
indiscriminate use of natural resources has resulted in an imbalance in the environment
natural resources are found in abundance in nature
natural resources are renewable
natural resources can be reproduced
The temperature at which ice melts is called the :
Melting point
Freezing point
Boiling point
Drying point
What percentage of Earth’s surface is covered with water?
1/4 th
2/3 rd
1/3 rd
3/4 th
The temperature at which liquid water changes into ice is called :
Which is known as Universal Solvent?
Blood
Saliva
Salt
Pollution of water bodies can be controlled by:
treatment of sewage waste before disposal
releasing industrial effluents into water bodies
dumping waste in water bodies
throwing plastic into water bodies
Which energy source can be reproduced?
Renewable
Non renewable
Non exhaustible
Non replenishable
Water bodies such as seas, oceans, lakes , ponds etc are found in :
Lithosphere
Atmosphere
Hydrosphere
Biosphere