1) What is the greenhouse effect? a) A) The trapping of heat by Earth's atmosphere b) B) The release of harmful gases into the environment c) C) The cooling effect caused by excess carbon dioxide d) D) The melting of polar ice caps 2) Which of the following is a greenhouse gas? a) A) Nitrogen b) B) Oxygen c) C) Methane d) D) Argon 3) What is the primary greenhouse gas responsible for global warming? a) A) Carbon monoxide b) B) Nitrous oxide c) C) Carbon dioxide d) D) Sulfur dioxide 4) How does the greenhouse effect contribute to global warming? a) A) By increasing the Earth's albedo b) B) By decreasing the concentration of greenhouse gases c) C) By reflecting solar radiation back into space d) D) By trapping heat and increasing the average temperature 5) Which of the following activities is a significant contributor to the increase in greenhouse gases? a) A) Recycling b) B) Using public transportation c) C) Burning fossil fuels d) D) Planting trees 6) What do you call to this line in the globe or map shown here? a) latitude b) longitude 7) What type of line is a latitude? a) horizontal b) vertical 8) Latitude lines __________________________________. a) meet at certain point b) parallel to each other 9) Into what direction does it divide the globe? a) east and west b) north and south 10) What type of line in the globe or map is shown here? a) latitude b) longitude 11) What type of line is longitude? a) horizontal b) vertical 12) Longitude lines are _________________________. a) equal in length b) not equal in length 13) Longitude lines ________________________________. a) meet at certain point b) parallel to each other 14) Into what direction does longitude line divide the globe? a) east and west b) north and south 15) What type of line is the equator? a) latitude b) longitude 16) Which human activity involves cutting down trees without permit? a) A.Dynamite fishing Dynamite fishing  b) Illegal logging c) Burning of garbage d) Smoke belching 17) Which of the following activities result to air pollution? a) Dynamite fishing A.Dynamite fishing Dynamite fishing  b) Illegal logging c) Burning of garbage d) Converting rice field into residential area 18) Cardo observed that the quality of soil changed. What might be the possible reason? a) Dynamite fishing A.Dynamite fishing Dynamite fishing  b) Using too much fertilizers c) Burning of garbage d) Converting rice field into residential area 19) Which among the following activities destroy the natural resources? a) Recycling A.Dynamite fishing Dynamite fishing  b) Planting trees c) Burning of garbage d) Quarrying and mining 20) Which of the following activities protect and conserve the natural resources? a) Illegal logging A.Dynamite fishing Dynamite fishing  b) 3 R's practice c) Burning of garbage d) Smoke belching

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