Maharashtra Board Class 5 EVS Solution Chapter 18 – The Environment and Us
Balbharati Maharashtra Board Class 5 EVS Solution Chapter 18: The Environment and Us. Marathi or English Medium Students of Class 5 get here The Environment and Us full Exercise Solution.
Std |
Maharashtra Class 5 |
Subject |
EVS |
Chapter |
18 |
Chapter Name |
The Environment and Us |
1.) What’s the solution?
Rivers and lakes are filled with water hyacinth.
Ans:
We have to remove the waste content from the water and the water which is mixed to river free from various detergents or waste content.
2.) Use your brain power!
What would happen if no kites (birds) are left in a particular region? Which living things would increase in number? Which would decrease?
Ans:
The living things which are increase in number when no kites (birds) are left in a particular region, are various kind of mammals, also trees.
3.) Answer the following questions.
(a) What is meant by migration?
Ans:
It is a process or movements of peoples from one place to other place in short period of time to settle permanently in that region is called as “Migration.”
(b) Describe the lifecycle of birds.
Ans:
1) Different kinds of birds firstly lay eggs.
2) After some days, the small birds are come out through these eggs.
3) They take care this bird, and after 1-2 months these birds are independent for its need and start flying.
(c) Give two causes of air pollution.
Ans:
Causes of air pollution:
1) Burning of fuels, carbon dioxide polluted air.
2) Industries in our country also left poisonous gases into the air.
(d) For what purpose do we use land obtained by clearing forests?
Ans:
1) Various purposes we are cleaning forests.
2) For making homes, for agriculture use also to make industries and roads we are cutting forests.
4.) Give reasons.
(a) It is important to conserve the living components of the environment.
Ans:
1) To live healthy life we have to conserve living components of the environment.
2) Devrais, Bio-diversity Parks, National Parks and Sanctuaries are created for the conservation of plants and animals in our environment.
(b) The numbers of wild animals are falling day by day.
Ans:
1) For making homes and other purpose peoples cutting trees and forest.
2) Due to cutting of forest, animals present in that decrease in number.
5.) True or false?
(a) Dead plants and animals are abiotic components.
Ans: false
(b) It is necessary to conserve biodiversity.
Ans: True
6.) Classify the following as natural or man-made.
Soil, horse, stone, water hyacinth, book, sunlight, dolphin, pen, chair, water, cottonwool, table, trees, brick.
Ans:
Natural | Man made |
horse | water hyacinth |
sunlight | book |
dolphin | pen |
water | chair |
trees | cottonwool |
Soil | table |
stone | brick |