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Answer: Has a disproportionately large effect on its environment relative to its abundance
Keystone species, like sea otters or wolves, maintain ecosystem structure; their removal can cause dramatic changes or collapse.
Answer: False
The pyramid of numbers can be inverted in some ecosystems, such as a tree supporting many insects and birds, where producers are fewer than consumers.
Answer: Grass → Deer → Wolf → Bacteria
A typical food chain flows from producer (grass) to primary consumer (deer) to secondary consumer (wolf) and finally to decomposers (bacteria).
Answer: Humus
Humus improves soil fertility, structure, and its ability to retain moisture and nutrients.
Answer: UNFCCC
The United Nations Framework Convention on Climate Change (UNFCCC) organizes the annual COP conferences to negotiate climate agreements.
Answer: True
Appiko (meaning 'hug' in Kannada) was inspired by Chipko and aimed to save the natural forests of the Western Ghats from clear-felling.
Answer: A proposed hydroelectric project
The movement successfully opposed a dam on the Kunthipuzha River that would have submerged the pristine Silent Valley evergreen forest.
Answer: Narmada Bachao Andolan
Medha Patkar led the Narmada Bachao Andolan, protesting against the large dam projects across the Narmada river and displacement of tribals.
Answer: WWF
The World Wide Fund for Nature (WWF) publishes the Living Planet Report, measuring the state of global biological diversity.
Answer: Gland
IUCN, the global authority on the environment and sustainable development, has its secretariat in Gland, Switzerland.
Answer: True
Greenpeace was founded in Vancouver, Canada, in 1971 by activists protesting US nuclear testing at Amchitka.
Answer: Nairobi, Kenya
UNEP is the only UN headquarters located in a developing country, situated in Nairobi, Kenya.
Answer: Gravitational pull of the Moon and Sun
Tides are generated by the gravitational interaction between the Earth, Moon, and Sun, with the Moon having the dominant effect.
Answer: China
China leads the world by a significant margin in both onshore and offshore installed wind power capacity.
Answer: True
Since the plants absorbed CO2 from the atmosphere to grow, burning them releases roughly the same amount back, maintaining a closed carbon loop.
Answer: True
The heat emanating from the Earth's core is virtually inexhaustible on human timescales, classifying geothermal energy as renewable.
Answer: Hemis National Park
Hemis National Park in Ladakh is the largest national park in India, covering an area of over 4,400 sq km.
Answer: True
Silent Valley is located in the Nilgiri Hills, within the Palakkad District of Kerala.
Answer: Nilgiri
The Nilgiri Biosphere Reserve, spanning Kerala, Tamil Nadu, and Karnataka, was the first to be set up in India.
Answer: Royal Bengal Tiger
The Sundarbans, spanning India and Bangladesh, is famous for its unique population of swimming Royal Bengal Tigers.