A) Destruction of natural habitat
B) Biosphere reserves and increasing pollution
C) Vulnerable ecosystems like man grooves and wet lands
D) Inaccesibility of habitats.
Correct Answer: A
Solution :[a] Plant biodiversity is invaluable because it balances ecosystems, protects watersheds, mitigates erosion, moderates climate, and provides shelter for animals. Threats to plant biodiversity include the increasing human population, deforestation, pollution and species extinction.
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