Answer: Option A) overexploitation
Explanation:
Overexploitation refers to the excessive consumption or usage of a particular resource(s) that is vital to the survival of living organisms.
Examples of resources that have been overexploited are:
- Forest trees
The uncontrolled falling of trees has deprived many animals (terrestrial and arboreal such as birds, monkey etc) shelter and food. Thus, their species has greatly reduced.
- Water
Human use of water and activities in rivers has led to the drying up of several water bodies forcing several species of aquatic organisms to struggle for survival, or even die and become extinct.
Others include atmospheric gases like oxygen, nitrogen, carbon etc
Thus, overexploitation is the single greatest threat to biological diversity
