Question 1 Which gas in the atmosphere is utilised by the trees and plants in photosynthesis? Question 2 Which gas in the atmosphere traps the heat rays reflected by the earth? Question 3 What are the consequences of deforestation? Question 4 What is global warming? Question 5 What is desertification.Name human activities which may lead […]
global warming
Burning of fuels leads to harmful products
Question 1 Name the poisonous gases produced by incomplete combustion of fuels? Question 2 Name the fuel which is gradually replacing petrol and diesel in automobiles? Question 3 Why LPG is a better domestic fuel than wood? Question 4 What are the disadvantages of burning wood as fuel? Question 5 Why the use of CNG […]
Green house effect
Question 1 What is green house effect? Question 2 Name green house gases? Question 3 What is global warming? Question 4 What are the effects of global warming? Green House Effect A building mostly made of glass for growing or sheltering the delicate plant is called greenhouse. The glass of wall of greenhouse allow sun […]