Match the following:
|Column I||Column II|
|(a) Biosphere||(1) Blanket of air which surrounds the earth|
|(b) Atmosphere||(2) Domain of water|
|(c) Hydrosphere||(3) Gravitational force of earth|
|(d) Environment||(4) Our surroundings|
|(5) Narrow zone where land, water and air interact|
|(6) Relation between the organisms and their surroundings|
Answer:(a) v, (b) i, (c) ii, (d) iv
Which is not a natural ecosystem?
Which is not a component of human environment?
Which is a human made environment?
Which is a threat to environment?
What is an ecosystem?
Answer: An ecosystem is the relation between the living organisms, as well as the relation between the organisms and their surroundings.
What do you mean by natural environment?
Answer: Natural environment is the environment that is given to us by nature and comprises of land, water, air, plants and animals.
Which are the major components of the environment?
Answer: The major components of the environment are – natural, human made and human.
Give four examples of human made environment.
Answer: Four examples of human made environment are (a) Roads, (b) Monuments, (c) Industries and (d) Buildings
What is lithosphere?
Answer: Lithosphere is the solid crust or the hard top layer of the earth.
Which are the two major components of biotic environment?
Answer: Plants and animals are the major components of the biotic environment.
What is biosphere?
Answer: Plant and animal kingdom together make the biosphere. It is a narrow zone of the earth where land, water and air interact with each other to support life.
Give reason for the following:
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