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an example of harmful substances in the air and water
C
one of the reasons for destroying wildlife habitats
B
an increase in the level of the world’s oceans
A
an effect of illegal hunting on the ecosystem
D
Global warming can cause extreme ________ such as floods or heatwaves.
weather events
The natural ________ of many animals can be destroyed in the process of cutting down forests.
habitats
One of the main causes of air pollution is ________ produced by machines and factories.
waste gases
When many animals disappear, this damages the natural balance of ________.
ecosystems
