Which of the following limiting factors would be directly affected by a drought? a. birth/death rate b. immigration c. available niche d. resource supply

I'm pretty sure it would be D resource supply. Resource supplies are limited because water is limited and water itself is a resource. It wouldn't be A, because birth and death rate are effected by the humans lack of food (which would first require the drought to kill off the plants.) Although animals would immigrate because of drought they are also immigrating more because of the lack of food, most wouldnt be able to move far enough away to get sustainable water sources. Lastly C isnt true, because their niches would only change due to them leaving, or other animals coming into the habbitat.

The Answer Is D. Resource Supply Explanation: