Green Technology for Environmental Sustainability

Question 1:The figures below show the activities carried out by Mariam and her father. What are the advantages of the activities carried out by them? Explain your answer by using the Green Technology concept. Answer:• Mariam’s activity can reduce global warming. The plants absorb carbon dioxide during photosynthesis and release oxygen. The more the trees, … Read more

Question 1:State the consequences if the number of vehicles using fossil fuel increases. Answer:The uncontrolled increase in greenhouse gases contributes to the greenhouse effect Question 2:Biofuel is ______ that is produced from _______ and _______. Answer:Biofuel is fatty acid methyl ester that is produced from plant oils and animal fats.

Question 1:What causes landslides and mud floods to happen? Answer:Uncontrolled logging Question 2:State the effect of using excessive chemical fertilisers in agriculture. Answer:Chemical fertilisers seep into the soil and reach water sources like rivers. As a result, the water in the river is polluted. In addition, the acidity of the soil increases. Question 3:State two … Read more

Question 1:State two socio-scientific issues in the waste and wastewater management sector. Answer:• Leftover food is not well disposed of• Chemical waste and trash are disposed of into the river and sea illegally Question 2:State two methods to overcome the problems in the waste and wastewater management sector. Answer:• Practise of 5R, which is Refuse, … Read more

Question 1:State three socio-scientific issues related to the energy sector. Answer:• Increase in the use of fossil fuel• Extreme climate change• Increase in greenhouse gases Question 2:What measures should be taken to conserve energy? Answer:• Organise an energy efficiency practice campaign• Practise and implement Green Technology

Question 1:What is the meaning of Green Technology? Answer:The development and application of products, equipment and systems used to conserve the environment and nature, as well as minimising and reducing the negative effects of human activities. Question 2:State two importance of energy efficiency. Answer:• Saves energy• Strengthens the country’s economy Question 3:State the sectors that … Read more