Air is mixture of gases like oxygen, nitrogen, carbon dioxide, water vapor and inert or noble gases. It is a transparent medium, invisible, tasteless and odourless.
Air is a natural resource and essential for the survival of living organisms.
The earth is surrounded by a thick envelope of air called atmosphere which extends up to 200 kilometers into space.
Learn about air, its composition, atmosphere, perform different activities to understand the characteristics of air and air pollution.
Forests are regions covered with dense trees and vegetation.
Forests are homes of wild animals and birds. Forests are very important for all living beings.
Forest keep the air clean, help in water cycle and is a shelter of wild animals and birds.
Cutting down forests is harmful in many ways.
Atmosphere - What is in the atmosphere, The atmosphere protects life, What does air contain, Properties of air.
A SmartTest on Natural Calamities
A SmartTest on Interdependence in Nature
A SmartTest on Talking about our Environment
A SmartTest on Atmosphere
A SmartTest on Water
A SmartTest on Soil Erosion and Conservation
Learnhive Lesson on Our Environment