#1
Which of the following is a greenhouse gas?
Carbon dioxide
ExplanationA major contributor to global warming.
#2
Which of the following is a major contributor to air pollution in urban areas?
Automobile emissions
ExplanationEmitted by vehicles and contributes to smog.
#3
Which gas is responsible for the majority of global warming?
Carbon dioxide
ExplanationTraps heat in the Earth's atmosphere.
#4
What is the primary cause of the hole in the Earth's ozone layer?
Chlorofluorocarbons (CFCs)
ExplanationDegrade ozone molecules in the stratosphere.
#5
What is the primary cause of the phenomenon known as the 'urban heat island'?
Excessive use of air conditioning
ExplanationIncreases temperature in urban areas.
#6
What is the main cause of deforestation?
Logging
ExplanationThe felling of trees for commercial purposes.
#7
What is ocean acidification primarily caused by?
Greenhouse gas emissions
ExplanationLeads to decreased pH levels in the ocean.
#8
What is the primary cause of the 'ozone hole' in the stratosphere?
Chlorofluorocarbons (CFCs)
ExplanationBreak down ozone molecules.
#9
What is the primary source of marine plastic pollution?
Microplastics from cosmetics
ExplanationTiny plastic particles from personal care products.
#10
What is the primary driver of coral reef bleaching?
Rising sea temperatures
ExplanationCauses stress to coral organisms.
#11
Which of the following is a major source of indoor air pollution?
Cooking stoves using solid fuels
ExplanationEmits harmful pollutants during combustion.
#12
Which of the following is a consequence of ocean acidification?
Harm to marine life with calcium carbonate shells
ExplanationAffects shell-forming marine organisms.
#13
Which of the following is a consequence of eutrophication?
Algal blooms
ExplanationExcessive growth of algae due to nutrient influx.
#14
What is the role of the ozone layer in the atmosphere?
Protects Earth from harmful ultraviolet (UV) radiation
ExplanationActs as a shield against UV radiation.
#15
Which of the following is a key factor contributing to soil erosion?
Overgrazing
ExplanationExcessive grazing leading to soil degradation.
#16
What is the primary impact of melting ice caps on sea levels?
Increased sea levels
ExplanationContributes to rising ocean levels.
#17
What is the main impact of biodiversity loss on ecosystems?
Decreased stability
ExplanationReduces ecosystem resilience.
#18
Which of the following is a consequence of thermal pollution in water bodies?
Decreased oxygen levels
ExplanationReduces dissolved oxygen content.
#19
Which of the following is a greenhouse gas that has a higher warming potential than carbon dioxide?
Methane
ExplanationMore effective at trapping heat.