Correct Answer: A) Conservation
Explanation: Conservation involves preserving and protecting natural habitats to maintain biodiversity and ensure the survival of various species.
A) Degradation
B) Extinction
C) Fragmentation
D) Desertification
Correct Answer: A) Degradation
Explanation: Biodiversity degradation refers to the gradual loss of species and habitats, reducing the variety of life in an ecosystem.
A) Conservation
B) Urbanization
C) Pollution control
D) Economic development
Correct Answer: A) Conservation
Explanation: Conservation involves preserving and protecting natural habitats to maintain biodiversity and ensure the survival of various species.
A) Temperate forest
B) Desert
C) Savannah
D) Boreal forest
Correct Answer: B) Desert
Explanation: Deserts are characterized by high temperatures and very low precipitation, resulting in arid conditions and specialized vegetation.
A) Increased soil fertility
B) Enhanced biodiversity
C) Loss of habitat for wildlife
D) Improved air quality
Correct Answer: C) Loss of habitat for wildlife
Explanation: Global deforestation leads to the loss of habitats for numerous wildlife species, contributing to decreased biodiversity.
A) Marine litter
B) Coastal erosion
C) Soil salinization
D) Desertification
Correct Answer: A) Marine litter
Explanation: Marine litter refers to the accumulation of plastic waste and other debris in the oceans, which can harm marine life and ecosystems.
A) Soil erosion
B) Desertification
C) Deforestation
D) Salinization
Correct Answer: B) Desertification
Explanation: Desertification is the process by which fertile land becomes desert due to factors such as prolonged drought, deforestation, and overgrazing.
A) Polar bear
B) Golden eagle
C) Monarch butterfly
D) Green sea turtle
Correct Answer: A) Polar bear
Explanation: The polar bear is an umbrella species because its protection also helps conserve the broader Arctic ecosystem and other species within it.
A) Mutualism
B) Commensalism
C) Parasitism
D) Symbiosis
Correct Answer: C) Parasitism
Explanation: In parasitism, one species benefits at the expense of another, often causing harm to the host species.
A) Invasive
B) Extinct
C) Endemic
D) Vulnerable
Correct Answer: D) Vulnerable
Explanation: A vulnerable species is one that is at risk of becoming endangered in the near future if current conditions persist.
A) Carbon monoxide
B) Nitrogen dioxide
C) Sulfur dioxide
D) Ozone
Correct Answer: D) Ozone
Explanation: Ozone is a secondary pollutant formed by chemical reactions between nitrogen oxides and volatile organic compounds in the presence of sunlight.
A) Tropical rainforest
B) Temperate rainforest
C) Mediterranean forest
D) Boreal forest
Correct Answer: C) Mediterranean forest
Explanation: Mediterranean forests are characterized by mild, wet winters and hot, dry summers, with vegetation adapted to these seasonal conditions.
A) Conservation tillage
B) Cover cropping
C) Overgrazing
D) Organic farming
Correct Answer: C) Overgrazing
Explanation: Overgrazing by livestock can lead to soil degradation by reducing vegetation cover and increasing erosion.
A) Endemic species
B) Invasive species
C) Keystone species
D) Migratory species
Correct Answer: B) Invasive species
Explanation: Invasive species are non-native species that can outcompete native species and disrupt ecosystem balance, causing ecological harm.
A) Global warming
B) Ocean acidification
C) Increased UV radiation
D) Desertification
Correct Answer: C) Increased UV radiation
Explanation: Depletion of the ozone layer allows more UV radiation to reach the Earth’s surface, leading to potential health and environmental issues.
A) Crop rotation
B) Chemical pesticide use
C) Monocropping
D) Overirrigation
Correct Answer: A) Crop rotation
Explanation: Crop rotation is important for sustainable agriculture as it helps maintain soil fertility, reduce pest and disease problems, and improve crop yields.
A) Water purification
B) Plastic production
C) Fossil fuel extraction
D) Urban development
Correct Answer: A) Water purification
Explanation: Forests provide ecosystem services such as water purification by filtering and regulating water flow through their vegetation and soil.
A) Clean Power Plan
B) Endangered Species Act
C) Marine Protection Act
D) Wilderness Act
Correct Answer: A) Clean Power Plan
Explanation: The Clean Power Plan aims to reduce carbon emissions from power plants and promote cleaner energy sources to combat climate change.
A) Solar energy
B) Wind power
C) Natural gas
D) Geothermal energy
Correct Answer: C) Natural gas
Explanation: Natural gas is a non-renewable resource that cannot be replenished quickly and contributes to greenhouse gas emissions when burned.
A) Tropical rainforest
B) Boreal forest
C) Temperate deciduous forest
D) Mediterranean forest
Correct Answer: B) Boreal forest
Explanation: Boreal forests, also known as taiga, are characterized by coniferous trees and long, cold winters, found in high northern latitudes.
A) Carbon sequestration
B) Air purification
C) Noise reduction
D) Urban cooling
Correct Answer: A) Carbon sequestration
Explanation: Wetlands act as carbon sinks, sequestering carbon dioxide from the atmosphere and helping to mitigate climate change.
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