Question

biodiversity refers to: *
a) the number of continents where a species lives
b) the variety of life at genetic, species, and ecosystem levels
c) the age of ecosystems
d) how many individuals live in a population

Explanation:

Biodiversity is defined as the variety of life forms in a particular area, encompassing genetic diversity (variation within species), species diversity (variety of species), and ecosystem diversity (variety of ecosystems). Option a is about species distribution across continents, not biodiversity. Option c is about ecosystem age, irrelevant. Option d is population size, not biodiversity. Option b matches the definition.

Answer:

b) The variety of life at genetic, species, and ecosystem levels