Download App

Conservation of plants and animals — Science STD 8 — Question

Maharashtra BoardEnglish MediumSTD 8ScienceConservation of plants and animals5 Marks
Question
How does deforestation lead to global warming?
✓

Answer

Deforestation leads to global warming. When trees are there, during the process of photosynthesis, the carbon dioxide (CO2) is used and oxygen is give out. When there are more and more no trees they use more carbon dioxide and give out oxygen and bring more rainfall. However when the number of trees are few, the amount of carbon dioxide is increased. Carbon dioxide causes greenhouse effect and global warming. The reduce rainfall also increases the temperature and causes 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.

Start Generating Free

Explore more

More "Question Answer (5 Marks)" from Conservation of plants and animals→Conservation of plants and animals — all question types→Science STD 8 question papers→Maharashtra Board STD 8 question papers→Maharashtra Board question paper generator→

Similar questions

The substance W is a fossil fuel. It occurs deep below the ground in certain areas of the earth. Another fossil fuel X is found trapped above the deposits of W. When W is subjected to a process called Y, then a number of different products are collected at different temperature ranges which are put to different uses. A special grade of product Z obtained in this way is used as aviation fuel in jet aeroplanes.
  1. What are (i) W, and (ii) X ?
  2. What is the physical state of (i) W, and (ii) X ?
  3. Name the process Y.
  4. Name the product Z.
→
What is meant by the terms ‘internal fertilization and ‘external fertilization’? Explain with example.
→
How does the pressure of a liquid depend on its depth? Draw a labelled diagram to show that the pressure of a liquid (say, water) depends on its depth.
→
State the characteristics of the image formed in a plane mirror.
→
The animal A which is classified as an amphibian lays eggs in pond water. The hatching of its eggs produces a tailed-form B which looks very different from the animal A. The form B then undergoes a change C and gets converted into animal A.
  1. Name (i) animal A and (ii) form B.
  2. What is the change C known as?
  3. Name the breathing organs of A.
  4. What are the breathing organs of B?
→
Explain why:
  1. A pencil will write on paper but not on glass.
  2. Climbing a greasy pole is very difficult.
→
What is a vaccine? How does a vaccine work?
→
With the help of a labeled diagram, describe the basic design of a Biosphere Reserve.
→
Name the constellation which appears to have the shape of:
  1. A big bear.
  2. A distorted W or M.
  3. A hunter.
  4. A big lion.
→
Which of the sounds having the following frequencies can be heard by the human beings and which cannot?
  1. 6 hertz.
  2. 5000 hertz.
  3. 10000 hertz.
  4. 35000 hertz.
  5. 18kHz.
→