Q: Answer the following questions:
a) What is an ecosystem ?
Ans: An ecosystem is a 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 transfer of energy and material.
b) What do you mean by natural environment ?
Ans: Land, water, air, plants and animals comprise the natural environment.
c) Which are the major components of the environment ?
Ans: The major components of the environment are: Natural, Human-made and Human.
d) Give four examples of human made environment ?
Ans: The four examples of human made environment are – Roads, Monuments, Industries, Parks.
e) What is lithosphere ?
Ans: Lithosphere is the solid crust or the hard top layer of the earth.
f) Which are the two major components of biotic environment ?
Ans: Plants and animals are the two major components of biotic environment.
g) What is biosphere ?
Ans: Biosphere is a narrow zone of the earth where land, water and air interact with each other to support life.