1. One effect of global warming is that sea levels are rising because the polar icecaps are melting.
2. The global population has increased because of better levels of nutrition.
3. Nuclear explosions and detonations of nuclear weapons lead to radioactive pollution.
4. More and more roads are being built, as a consequence, air pollution is rising
5. In the last ten years, many BC valleys have been clearcut so 142 species of salmon have become extinct.
6. the fish and other aquatic animals have died due to the polluted water.
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