Question 11 MarkThe ozone layer is found between _______ km above the earth’s surface.AnswerThe ozone layer is found between 20 and 40 km above the earth’s surface.View full question & answer→
Question 21 MarkGlobal warming will _____ climate change.AnswerGlobal warming will increase climate change.View full question & answer→
Question 41 MarkUse of fossil _____ causes global warming.AnswerThe use of fossil fuels causes global warming.View full question & answer→
Question 51 Mark________dioxide is a greenhouse gas.AnswerCarbon dioxide is a greenhouse gasView full question & answer→
Question 61 MarkWhat do you understand by the term ‘global warming’?AnswerThe greenhouse gases in the atmosphere trap a part of the heat radiated back by the earth, increasing its temperature. The increase in the earth’s temperature is called global warming.View full question & answer→
Question 71 MarkName some diseases that are caused due to exposure to ultraviolet rays of the sun.AnswerExposure to UV rays can cause sunburn, cataracts, hair loss, skin cancer, and birth deformities.View full question & answer→
Question 81 MarkName two more greenhouse gases.AnswerMethane and water vapour are other greenhouse gases.View full question & answer→