1. Climate change refers to:
(A) Seasonal changes only
(B) Daily weather fluctuations only
(C) Long-term alterations in temperature, precipitation, and weather patterns
(D) Changes in soil nutrients only
2. Greenhouse gases include:
(A) Oxygen and nitrogen only
(B) Carbon dioxide, methane, nitrous oxide, and water vapor
(C) Hydrogen only
(D) Argon only
3. The greenhouse effect is:
(A) Trapping of heat in the Earth’s atmosphere by greenhouse gases
(B) Reflection of sunlight by clouds only
(C) Evaporation of water only
(D) Photosynthesis in plants
4. Global warming is:
(A) Decrease in rainfall only
(B) Rise in Earth's average surface temperature
(C) Increase in soil fertility
(D) Increase in cloud cover only
5. Anthropogenic climate change is caused by:
(A) Volcanic eruptions only
(B) Human activities such as burning fossil fuels and deforestation
(C) Solar flares only
(D) Natural tides only
6. Consequences of climate change include:
(A) Only plant growth enhancement
(B) Soil fertility increase only
(C) Sea level rise, habitat loss, species extinction, and extreme weather events
(D) Decrease in atmospheric oxygen only
7. Melting of glaciers and polar ice caps contributes to:
(A) Ozone layer repair only
(B) Decrease in CO₂
(C) Increased soil fertility only
(D) Sea level rise
8. Ocean acidification occurs due to:
(A) Nitrogen fixation only
(B) Increased oxygen only
(C) Decrease in salinity only
(D) Increased CO₂ dissolving in oceans forming carbonic acid
9. Coral bleaching is caused by:
(A) Rising sea temperatures and ocean acidification
(B) Overfishing only
(C) Pollution of soil only
(D) Decrease in sunlight only
10. Climate change affects biodiversity by:
(A) Only affecting microbes
(B) Enhancing species uniformly
(C) Altering species distribution and causing extinctions
(D) Increasing soil nutrients only
11. Phenological shifts refer to:
(A) Soil formation timing only
(B) Changes in timing of biological events like flowering and migration
(C) Water evaporation timing only
(D) Changes in wind patterns only
12. Climate change can lead to:
(A) Increased soil fertility only
(B) Reduced sunlight only
(C) Increased frequency of extreme weather events
(D) Decreased oxygen only
13. Deforestation contributes to climate change by:
(A) Reducing soil erosion only
(B) Increasing atmospheric CO₂ levels
(C) Enhancing rainfall only
(D) Increasing oxygen only
14. Fossil fuel combustion affects climate by:
(A) Reducing temperature only
(B) Releasing CO₂ and other greenhouse gases
(C) Enhancing soil fertility only
(D) Producing oxygen only
15. Methane (CH₄) is produced from:
(A) Livestock digestion, rice paddies, and landfills
(B) Only fossil fuels
(C) Soil erosion only
(D) Photosynthesis only
16. Nitrous oxide (N₂O) emissions come from:
(A) Fertilizer application and industrial processes
(B) Solar radiation only
(C) Photosynthesis only
(D) Forest growth only
17. Carbon sinks include:
(A) Urban areas only
(B) Deserts only
(C) Forests, oceans, and soil
(D) Polar ice only
18. Climate change can cause:
(A) Desertification and loss of arable land
(B) Increased soil fertility only
(C) Reduced soil erosion only
(D) Enhanced precipitation uniformly
19. Extreme weather events due to climate change include:
(A) Hurricanes, floods, droughts, and heatwaves
(B) Only soil erosion
(C) Only volcanic eruptions
(D) Only tsunamis
20. Climate change affects human health by:
(A) Improving water quality only
(B) Enhancing immunity only
(C) Reducing disease transmission
(D) Increasing heat stress, vector-borne diseases, and malnutrition
21. Sea level rise affects coastal ecosystems by:
(A) Increasing freshwater availability only
(B) Causing habitat loss and saltwater intrusion
(C) Enhancing soil fertility
(D) Reducing temperature only
22. Climate change impacts agriculture by:
(A) Altering crop yields and increasing pest outbreaks
(B) Increasing soil fertility only
(C) Enhancing water supply only
(D) Reducing sunlight only
23. Mitigation of climate change includes:
(A) Reducing greenhouse gas emissions and enhancing carbon sinks
(B) Increasing deforestation
(C) Burning fossil fuels only
(D) Reducing renewable energy use
24. Adaptation to climate change involves:
(A) Ignoring environmental changes
(B) Adjusting practices to cope with impacts
(C) Increasing vulnerability
(D) Reducing biodiversity only
25. Renewable energy sources help mitigate climate change by:
(A) Depleting forests
(B) Increasing CO₂ emissions
(C) Reducing reliance on fossil fuels
(D) Enhancing greenhouse gases
26. Carbon footprint refers to:
(A) Total greenhouse gases emitted by an individual, organization, or product
(B) Soil carbon only
(C) CO₂ in oceans only
(D) Carbon in rocks only
27. International agreements to combat climate change include:
(A) Stockholm Convention only
(B) Montreal Protocol only
(C) Kyoto Protocol and Paris Agreement
(D) Ramsar Convention only
28. Climate change accelerates species extinction by:
(A) Altering habitats and exceeding tolerance limits
(B) Enhancing food availability
(C) Increasing oxygen only
(D) Improving water quality only
29. Ocean warming affects marine biodiversity by:
(A) Increasing fish growth uniformly
(B) Enhancing nutrient cycling only
(C) Shifting species ranges and bleaching coral reefs
(D) Reducing salinity only
30. Climate-induced migration occurs when:
(A) Only soil microbes move
(B) Only humans migrate
(C) Only birds migrate annually
(D) Species move to suitable habitats due to changing conditions
31. Permafrost thaw releases:
(A) Only water vapor
(B) Only nitrogen
(C) Only oxygen
(D) Methane and CO₂ into the atmosphere
32. Albedo effect influences climate by:
(A) Reflecting solar radiation from surfaces
(B) Absorbing nutrients only
(C) Increasing soil fertility
(D) Enhancing photosynthesis only
33. Climate change affects phenology by:
(A) Altering flowering, breeding, and migration timing
(B) Reducing soil fertility only
(C) Enhancing photosynthesis only
(D) Increasing wind patterns only
34. Extreme heat events affect ecosystems by:
(A) Increasing water retention only
(B) Improving plant growth only
(C) Causing heat stress and mortality in species
(D) Reducing sunlight only
35. Droughts due to climate change cause:
(A) Enhanced biodiversity only
(B) Flooding only
(C) Soil enrichment only
(D) Water scarcity and crop failure
36. Climate change amplifies the spread of vector-borne diseases by:
(A) Changing temperature and precipitation patterns
(B) Increasing soil nutrients only
(C) Reducing insect populations only
(D) Improving oxygen levels only
37. Urban heat islands worsen climate impacts by:
(A) Improving soil fertility only
(B) Reducing CO₂ only
(C) Increasing local temperatures in cities
(D) Enhancing water retention only
38. Afforestation helps mitigate climate change by:
(A) Releasing methane only
(B) Absorbing CO₂ from the atmosphere
(C) Increasing fossil fuel use
(D) Enhancing urbanization
39. Climate change affects freshwater ecosystems by:
(A) Enhancing photosynthesis only
(B) Only increasing nutrient levels
(C) Only reducing oxygen
(D) Altering water temperature, flow, and chemistry
40. Loss of glaciers due to climate change impacts:
(A) Biodiversity only in deserts
(B) Soil fertility only
(C) Forest growth only
(D) Water availability for millions of people
41. Climate change mitigation strategies include:
(A) Renewable energy, energy efficiency, and reforestation
(B) Deforestation only
(C) Fossil fuel expansion only
(D) Industrial emissions increase only
42. Sea level rise threatens:
(A) Desert regions only
(B) Mountain ecosystems only
(C) Coastal habitats, infrastructure, and human settlements
(D) Forest interiors only
43. Climate change impacts soil by:
(A) Reducing only pH
(B) Increasing only fertility
(C) Altering moisture content, nutrient cycling, and microbial activity
(D) Reducing only erosion
44. Global average temperature has increased by approximately:
(A) 10°C only
(B) 0.1°C only
(C) 5°C only
(D) 1°C since pre-industrial times
45. Extreme precipitation events due to climate change cause:
(A) Only drought
(B) Flooding and soil erosion
(C) Increased soil fertility
(D) Reduced nutrient leaching
46. Carbon sequestration refers to:
(A) Releasing CO₂ into the atmosphere
(B) Capturing and storing atmospheric CO₂
(C) Water evaporation only
(D) Photosynthesis only
47. Methane has a higher global warming potential than CO₂ because:
(A) It increases rainfall only
(B) It is more abundant
(C) It reduces oxygen only
(D) It traps more heat per molecule
48. Climate change impacts phenotypic plasticity by:
(A) Reducing only genetic diversity
(B) Altering traits like growth, reproduction, and behavior
(C) Enhancing soil nutrients only
(D) Increasing energy flow only
49. International carbon markets help mitigate climate change by:
(A) Increasing fossil fuel use
(B) Allowing trading of carbon credits to reduce emissions
(C) Reducing forest cover
(D) Enhancing greenhouse gases
50. Understanding climate change biology is essential for:
(A) Soil testing only
(B) Conservation, adaptation strategies, and sustainable development
(C) Industrial growth only
(D) Water treatment only