What is the term for species that have adapted to survive in extremely harsh environments?
A
Extremophiles
B
Endemic species
C
Invasive species
D
Keystone species
Correct Answer: Option A — Extremophiles
Explanation:
Extremophiles are organisms adapted to thrive in extreme environmental conditions such as high temperatures, acidity, or salinity. Examples include bacteria living near deep-sea hydrothermal vents and organisms surviving in highly acidic hot springs.