Question
Is deforestation associated with global warming ? Explain.
✓
Answer
Trees (and other plants) use carbon dioxide gas from the atmosphere for the process of food making called 'photosynthesis'. When a lot of trees are cut down during deforestation, then lesser number of trees will be left. The lesser number of trees will use up less carbon dioxide due to which the amount of carbon dioxide in the atmosphere will increase. In this way, deforestation increases the level of carbon dioxide in the atmosphere. Carbon dioxide gas traps the sun's heat rays reflected by the Earth (causing greenhouse effect). Trapping of heat rays by carbon dioxide increases the temperature of Earth's atmosphere. This will lead to global warming. The gradual increase in the overall temperature of Earth's atmosphere due to greenhouse effect caused by the increased level of carbon dioxide in the atmosphere is called global warming.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
What is the mode of transmission of the following diseases?
$a.$ Rust of wheat.
$b.$ Citrus canker.
$c.$ Yellow vein mosaic of bhindi $($Okra$).$
→$a.$ Rust of wheat.
$b.$ Citrus canker.
$c.$ Yellow vein mosaic of bhindi $($Okra$).$
When the cutting edge of a knife is put against a fast rotating stone to sharpen it, sparks are seen to fly. Explain the reason.
Sound produced by a stretched wire is due to vibrations. Show by an activity.
Briefly, explain how the charge can be detected with the help of an electroscope.
Different between ‘endangered species’ and extinct species.
Suggest three measures to protect ourselves from lightning.
Element $A$ is soft, brittle and does not conduct electricity. Element $B$ is hard, malleable and 'ductile; and also conducts electricity. Which of the two elements, $A$ or $B$, is a non-metal?
→Word game: Use the clues to work out the words.
Across
3. Protruding voice box in boys
4. Glands without ducts
7. Endocrine gland attached to brain
8. Secretion of endocrine glands
9. Pancreatic hormone
10. Female hormone
Down
1. Male hormone
2. Secretes thyroxine
3. Another term for teenage
5. Hormone reaches here through blood stream
6. Voice box
7. Term for changes at adolescence
Across
3. Protruding voice box in boys
4. Glands without ducts
7. Endocrine gland attached to brain
8. Secretion of endocrine glands
9. Pancreatic hormone
10. Female hormone
Down
1. Male hormone
2. Secretes thyroxine
3. Another term for teenage
5. Hormone reaches here through blood stream
6. Voice box
7. Term for changes at adolescence
Complete the word puzzle.
Down:
$1.$ Species on the verge of extinction.
$2.$ A book carrying information about endangered species.
$5.$ Consequence of deforestation.
Across:
$1.$ Species which have vanished.
$3.$ Species found only in a particular habitat.
$4.$ Variety of plants, animals and microorganisms found in an area.
→Down:
$1.$ Species on the verge of extinction.
$2.$ A book carrying information about endangered species.
$5.$ Consequence of deforestation.
Across:
$1.$ Species which have vanished.
$3.$ Species found only in a particular habitat.
$4.$ Variety of plants, animals and microorganisms found in an area.
When the free ends of a conductivity tester (made by using a battery connected to a wire wound around a compass) are dipped into a solution, the magnetic needle shows deflection. Can you give the reason for this deflection.