Question

what can cause fluctuations in carrying capacity?
sunny or cloudy days
visual appeal of an area
variations in food supply

Explanation:

Carrying capacity is the maximum population an environment can sustain. Food supply is a key resource; if food varies (e.g., drought reducing plant growth for herbivores), the environment’s ability to support organisms changes. Sunny/cloudy days (short - term weather) and visual appeal don’t impact resource availability for population support like food does.

Answer:

variations in food supply