International Relations and the Environment
ICSE · Class 12 · Environmental Science
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What makes environmental problems international in nature?
Answer
Air, water, shifting soil, and migratory animals cross national borders. Because of this, one country alone cannot fully solve many environmental problems. Cooperation at local, national, and internat…
Why are developing countries important for global biodiversity?
Answer
About 80% of Earth's terrestrial biodiversity is found in developing countries. Many forests, wildlife species, and ecosystems are located there, so their protection is crucial for the planet as a who…
Why are tropical rainforests called the "cradles of biodiversity"?
Answer
Rainforests cover only 6% of Earth's land surface but contain over 50% of global biodiversity. They support an extremely large number of plant and animal species, many of which live nowhere else.
How do rainforests help control climate?
Answer
Rainforests absorb large amounts of carbon dioxide and release oxygen through photosynthesis, which gives them the nickname "lungs of the planet." They also store a lot of carbon, so cutting and burni…
A single rainforest tree may support many species. Why is this important?
Answer
A single rainforest tree may house more than 40 different ant species. This shows how closely organisms are connected in a rainforest and how damage to one tree can affect many other living things.
What happens when rainforests are cleared for farming or roads?
Answer
Clear cutting and fragmentation destroy habitats, break species interactions, and reduce biodiversity. Rainforest soils are often poor in nutrients, so once the forest is removed, regrowth becomes ver…
What causes rapid deforestation in tropical regions?
Answer
Population growth, poverty, government policies that reward cleared land, logging, mining, road building, cattle pastures, and industrial agriculture all increase deforestation. Consumer demand in wea…
How much did Brazil reduce Amazon deforestation?
Answer
Brazil's deforestation dropped from 19,508 km² per year to 6,451 km² per year, which is a 67% drop. This major reduction also meant nearly 1 billion tons of CO2 emissions were avoided.
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