Desert areas are characterised by low rainfall, scanty vegetation and extreme temperatures. Depending on the temperatures, there can be hot deserts or cold deserts. The Sahara desert is the hottest and the world’s largest desert. Ladakh is a cold desert …
Our environment is everything that surrounds us. Human settlements were the outcome of agriculture, and rivers were a boon for agriculture. The first settlements of humans started developing around rivers. The life and culture of people vary in the different …
Our Earth’s surface is covered with 71 per cent of water. The water cycle is the process by which water continually changes its form and circulates between oceans, the atmosphere and land. The major sources of freshwater are the rivers, ponds, springs …
1. Answer the following questions. (i) What is the atmosphere? Answer: The blanket of air surrounding the earth is called the atmosphere. The atmosphere primarily comprises nitrogen and oxygen in bulk and other gases like carbon dioxide, helium, ozone, etc. in …
Q 1. Answer the following questions. (i) Why do the plates move? Answer: The movement of molten magma inside the earth results in the movement of plates. (ii) What are exogenic and endogenic forces? Answer: The movement of the Earth is divided …
Our Earth is a dynamic planet. It constantly undergoes changes inside and outside. The interior of the Earth consists of crust, mantle and core. The earth’s crust is made up of various types of rocks. There are three major types …
Q 1. Answer the following questions. (i) What is an ecosystem? Answer: The system formed by the interaction of all living organisms with each other and with the physical and chemical factors of the environment in which they live, all linked by …
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