Answer:
Deforestation.
Explanation:
Humans have affected the wildlife habitats that posed a great threat to plant and animals. Many flora and fauna population has become extinct and still in danger due to human activities.
The deforestation may be defined as the cutting down of the trees. Trees are important for the atmosphere as they are solely responsible for the oxygen production. The animals that depends on the plants has also been extincted due to deforestation. Other human activities like hunting, poaching and urbanization has also destroyed wildlife habitats.
Thus, the answer is deforestation.
