What is the primary cause of global warming?
Global warming is primarily caused by greenhouse gas emissions from human activities, such as burning fossil fuels.
Environment and Biodiversity MCQ
The Environment and Biodiversity section focuses on the study of ecosystems, flora and fauna, conservation efforts, and the impact of human activities on natural habitats.
It covers topics like environmental protection laws, biodiversity hotspots, climate change, and sustainable development, making it essential for competitive exams related to environmental science and general knowledge.
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Which of the following is a non-renewable resource?
Coal is a non-renewable resource, as it takes millions of years to form and cannot be replenished quickly.
What is the term for the variety of life in a particular habitat or ecosystem?
Biodiversity refers to the variety of life forms in a specific habitat or ecosystem, including the number of species present.
Which of the following is a major contributor to air pollution?
Vehicle emissions are a major contributor to air pollution, releasing harmful substances into the atmosphere.
Which of the following is a biodiversity hotspot?
The Amazon Rainforest is considered a biodiversity hotspot due to its vast number of species and ecosystems.
What is the primary function of a wetland ecosystem?
Wetland ecosystems primarily function as water filtration systems, removing pollutants and sediments from water.
Which gas is primarily responsible for ozone depletion?
Chlorofluorocarbons (CFCs) are the primary gases responsible for ozone depletion in the stratosphere.
What is the main threat to endangered species?
Habitat loss due to urbanization, deforestation, and agriculture is the main threat to endangered species.
Which of the following ecosystems has the highest biodiversity?
Tropical rainforests are known to have the highest biodiversity among all ecosystems due to their favorable climate and complex structures.
Which of the following practices helps in conserving biodiversity?
Establishing protected areas, such as national parks and wildlife reserves, is crucial for conserving biodiversity.
What is the main cause of deforestation?
Agricultural expansion for crops and livestock is the primary cause of deforestation globally.
Which of the following is an example of an invasive species?
The Kudzu vine is considered an invasive species in the southeastern United States, as it grows rapidly and outcompetes native plants.
What percentage of the Earth's surface is covered by oceans?
Approximately 71% of the Earth's surface is covered by oceans, making them a crucial component of the planet's ecosystem.
What is the term for the gradual increase in the Earth's average temperature?
Global warming refers to the gradual increase in the Earth's average temperature due to the buildup of greenhouse gases.
Which of the following pollutants is most harmful to aquatic life?
Heavy metals, such as mercury and lead, are particularly harmful to aquatic life, causing toxicity and disrupting ecosystems.
Which natural phenomenon is characterized by a sudden increase in temperature and is linked to climate change?
Heatwaves are characterized by a sudden increase in temperature and are becoming more frequent due to climate change.