Carrying capacity can change with resource availability and environmental conditions. Is this statement true?

• A. True
• B. False
• C. Only for bacteria
• D. Not related

Answer: (A)

Carrying capacity is not a fixed number. It represents the maximum population an environment can support indefinitely given the resources available and the prevailing environmental conditions. When resources like food, water, space, or energy are plentiful, the environment can sustain more individuals, so the carrying capacity rises. When resources become scarce or conditions become harsher—due to drought, temperature shifts, habitat loss, disease, or predation—the carrying capacity falls. This dynamic is why populations tend to level off at a value that can change over time, rather than leveling at a single unchanging number. This concept applies broadly to all organisms, not just bacteria, since any population depends on resource availability and environmental factors.