Question

Consider the following scenario:

A drought hits the habitat of a semi-aquatic bird population. All ponds dry up, and fish populations decline. There are two groups of birds in the population that differ in leg length and diet. Long-legged birds eat fish, while short-legged birds eat insects. The drought has little effect on insect populations.
What is the main selective pressure in this scenario?
(1 point)
• fish population
• leg length
• insect population
• drought

Answer 1

[AI-generated answer — Bot GPT 3.5]

The main selective pressure in this scenario is the drought. The drying up of the ponds and decline in fish populations is causing a shortage of food for the long-legged birds that rely on fish for their diet. This in turn puts pressure on the long-legged birds to adapt to the changing environment in order to survive.