#1
Which of the following is a major greenhouse gas responsible for global warming?
Oxygen (O2)
Nitrogen (N2)
Carbon dioxide (CO2)
Argon (Ar)
#2
What is the term for the process by which plants use sunlight to synthesize food from carbon dioxide and water?
Photosynthesis
Respiration
Transpiration
Fermentation
#3
Which of the following is a consequence of habitat destruction?
Increased biodiversity
Stabilization of ecosystems
Loss of species diversity
Enhanced ecological balance
#4
Which of the following pollutants is known for causing acid rain?
Carbon monoxide (CO)
Nitrogen oxides (NOx)
Sulfur dioxide (SO2)
Particulate matter (PM)
#5
Which of the following is a consequence of eutrophication in aquatic ecosystems?
Decreased algal blooms
Increased dissolved oxygen levels
Fish kills
Reduced nutrient levels
#6
What is the primary cause of deforestation worldwide?
Expansion of urban areas
Mining activities
Agricultural activities
Construction of roads
#7
Which of the following is not a renewable energy source?
Solar energy
Wind energy
Natural gas
Hydropower
#8
What is the term for the variety of life on Earth and the natural patterns it forms?
Ecology
Ecosystem
Biodiversity
Sustainability
#9
Which of the following is a non-point source of water pollution?
Industrial discharge pipes
Wastewater treatment plants
Agricultural runoff
Oil spills
#10
What is the term for the gradual increase in the Earth's average temperature due to human activities?
Climate change
Global warming
Ecological imbalance
Greenhouse effect
#11
Which of the following is not a major cause of air pollution?
Burning fossil fuels
Industrial emissions
Volcanic eruptions
Agricultural activities
#12
What is the term for the process of converting waste materials into reusable materials?
Pollution
Recycling
Incineration
Landfilling
#13
Which of the following is a consequence of ocean acidification?
Decreased coral bleaching
Increased shell formation in marine organisms
Decline in fish population
Increase in pH levels
#14
What is the main function of wetlands in the ecosystem?
To store and regulate water
To provide habitat for aquatic species
To filter pollutants
All of the above
#15
Which of the following is an example of an invasive species?
Bees pollinating flowers
Native grasses in a prairie ecosystem
Zebra mussels in the Great Lakes
Bears in a forest habitat
#16
Which of the following is not a characteristic of an indicator species?
Sensitive to environmental changes
Large population size
Representative of ecosystem health
Quick to respond to changes
#17
Which of the following is an example of a keystone species?
Deer in a forest ecosystem
Rabbits in a grassland habitat
Bees pollinating flowers
Sea otters in a kelp forest