please help
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 insects. the drought has little effect on the insect populations.
What is the main selective pressure in this scenario?
(1 point)
Drought
Insect population
Leg length
Fish population
The main selective pressure in this scenario is the drought, as it is directly impacting the habitat and resources available to the semi-aquatic bird population. The drying up of ponds and decline in fish populations are directly caused by the drought, leading to a decrease in resources for the birds. The fact that the drought has little effect on the insect populations suggests that leg length and diet (eating insects) are not the main factors driving selection in this scenario.
which one of these is the correct answer
Drought
Insect population
Leg length
Fish population