A) Produce oxygen
B) Protect against soil erosion
C) Store carbon dioxide
D) Regulate climate
Correct Answer: B) Protect against soil erosion
Explanation: Mangroves protect coastal areas from soil erosion, storm surges, and flooding by stabilizing the shoreline with their extensive root systems.
A) Herbivores
B) Omnivores
C) Carnivores
D) Decomposers
Correct Answer: C) Carnivores
Explanation: Carnivores are typically apex predators and occupy the top position in the food chain, feeding on herbivores and other carnivores.
A) Rivers
B) Lakes
C) Glaciers
D) Groundwater
Correct Answer: C) Glaciers
Explanation: Glaciers and ice caps hold the largest proportion of Earth’s freshwater, though much of it is not easily accessible for human use.
A) Atmosphere
B) Oceans
C) Soil
D) Fossil fuels
Correct Answer: B) Oceans
Explanation: The oceans act as the largest carbon sink, absorbing large amounts of carbon dioxide from the atmosphere.
A) Endemic
B) Exotic
C) Invasive
D) Migratory
Correct Answer: A) Endemic
Explanation: Endemic species are native to a specific region and are not found naturally anywhere else.
A) Pollination
B) Decomposition
C) Primary production
D) Predation
Correct Answer: B) Decomposition
Explanation: Detritivores, such as earthworms and fungi, decompose dead organic material and help recycle nutrients in the ecosystem.
A) Water vapor
B) Methane
C) Oxygen
D) Nitrous oxide
Correct Answer: C) Oxygen
Explanation: Oxygen is not a greenhouse gas; greenhouse gases trap heat in the Earth’s atmosphere, contributing to global warming.
A) Accumulation of species in an ecosystem
B) Accumulation of nutrients in plants
C) Accumulation of toxic substances in organisms
D) Accumulation of carbon dioxide in the atmosphere
Correct Answer: C) Accumulation of toxic substances in organisms
Explanation: Bioaccumulation refers to the build-up of toxic substances, such as heavy metals and pesticides, in the tissues of living organisms over time.
A) Nitrogen fixation
B) Denitrification
C) Ammonification
D) Nitrification
Correct Answer: B) Denitrification
Explanation: Denitrification is the process by which nitrates are converted back into nitrogen gas by bacteria, returning nitrogen to the atmosphere.
A) Acid rain
B) Deforestation
C) Global warming
D) Soil erosion
Correct Answer: B) Deforestation
Explanation: Deforestation leads to loss of vegetation, which contributes to soil erosion and eventually desertification, especially in arid regions.
A) Urbanization
B) Ocean acidification
C) Conservation efforts
D) Volcanic eruptions
Correct Answer: A) Urbanization
Explanation: Urbanization, driven by human population growth and development, is one of the main causes of habitat loss worldwide.
A) Africa
B) Asia
C) South America
D) Australia
Correct Answer: C) South America
Explanation: South America, particularly the Amazon Basin, holds the largest percentage of Earth’s tropical rainforests.
A) Grasslands
B) Deserts
C) Coastal wetlands
D) Mountains
Correct Answer: C) Coastal wetlands
Explanation: Coastal wetlands, including mangroves and salt marshes, are vulnerable to rising sea levels, which can lead to habitat loss and increased flooding.
A) Eutrophication
B) Acidification
C) Bioaccumulation
D) Salinization
Correct Answer: A) Eutrophication
Explanation: Eutrophication is the process by which water bodies become over-enriched with nutrients, often from agricultural runoff, leading to algal blooms and oxygen depletion.
A) Nilgai
B) House sparrow
C) Water hyacinth
D) Peacock
Correct Answer: C) Water hyacinth
Explanation: Water hyacinth is an invasive aquatic plant species in India, known for its rapid growth and the threat it poses to water bodies and biodiversity.
A) Earthquakes
B) Floods
C) Volcanoes
D) Hurricanes
Correct Answer: B) Floods
Explanation: Deforestation can lead to increased runoff and reduced soil absorption, which increases the risk of floods in deforested areas.
A) Afforestation
B) Deforestation
C) Reforestation
D) Urbanization
Correct Answer: C) Reforestation
Explanation: Reforestation is the process of planting trees in areas where forests have been previously cut down or degraded to restore ecological balance.
A) Wind energy
B) Solar energy
C) Natural gas
D) Biomass
Correct Answer: C) Natural gas
Explanation: Natural gas is a non-renewable resource formed from fossilized organic matter and cannot be replenished on a human timescale.
A) Monarch butterfly
B) Elephant
C) Penguin
D) Sea urchin
Correct Answer: A) Monarch butterfly
Explanation: Monarch butterflies are known for their long migration from North America to Mexico, traveling thousands of miles annually.
A) Organic farming
B) Overirrigation
C) Crop rotation
D) Conservation tillage
Correct Answer: B) Overirrigation
Explanation: Overirrigation can lead to the accumulation of salts in the soil, a process known as soil salinization, which can reduce crop yields.
& stay ahead of your competitors!
* Subscribe to our email newsletter to get the latest posts delivered right to your email.
