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Exercises
1. Answer the following questions.
(i) What is an ecosystem?
(ii) What do you mean by natural environment
(iii) Which are the major components of the env.
(iv) Give four examples of human made environ
(v) What is lithosphere?
(vi) Which are the two major components of biot
(vii) What is biosphere?
Answers
Answer:
(i)An ecosystem is a community of living creatures (plants, animals (including humans), and microorganisms) in a certain region. Each member of the ecosystem interacts with each other and the non-living parts of its environment, such as water, air, climate, and geographic features.
(ii)The natural environment encompasses all living and non-living things occurring naturally, meaning in this case not artificial. ... This environment encompasses the interaction of all living species, climate, weather and natural resources that affect human survival and economic activity.
(iii)The four major components of environment include lithosphere, hydrosphere, atmosphere and biosphere, corresponding to rocks, water, air and life respectively.
(iv)Bridge, roads, buildings, and monuments are four examples of human made environment.
(v)The lithosphere is the solid, outer part of the Earth. The lithosphere includes the brittle upper portion of the mantle and the crust, the outermost layers of Earth's structure. It is bounded by the atmosphere above and the asthenosphere (another part of the upper mantle) below.
(vi)Two major components of biotic environment are Plants and Animals. (vii) What is biosphere? Answer: Biosphere is a narrow zone of the earth where land, water and air interact with each other to support life.
(vii)The biosphere, (from Greek bios = life, sphaira, sphere) is the layer of the planet Earth where life exists. ... The biosphere is one of the four layers that surround the Earth along with the lithosphere (rock), hydrosphere (water) and atmosphere (air) and it is the sum of all the ecosystems.
Answer:
1. Ecosystem it is a community of groups of living organisms that live and interact with each other in specific environments.
2. All living and non living things occurring naturally without any human support.
3. major component of energy
a. carbohydrates b. protien
c. fat
4. Example of human made environments
a. Pond
b. park
c. zoo
d.Bridge , road , buildings
5. The lithosphere is the outer solid part of the earth, including the crust and upper most mantels.
6. The two major components are
a. Plants
b. Animal
7.Biosphere is the narrow zone of the earth where land , water, and air interact with each other to support life.