21. The maximum number of individuals of a species that an ecosystem can support is called:
a) Carrying capacity
b) Population density
c) Biodiversity
d) Habitat
Answer: a) Carrying capacity
22. The process of growth and development in a population is known as:
a) Immigration
b) Emigration
c) Birth rate
d) Natality
Answer: d) Natality
23. The gradual change in the composition of species in an area over time is called:
a) Evolution
b) Succession
c) Variation
d) Natural selection
Answer: b) Succession
24. The first organisms to colonize a new habitat during primary succession are called:
a) Pioneers
b) Climax species
c) Competitors
d) Decomposers
Answer: a) Pioneers
25. The variety of different species in an area is called:
a) Carrying capacity
b) Population density
c) Biodiversity
d) Habitat
Answer: c) Biodiversity
