the tropical sahel region is particularly vulnerable to drought, but its ecosystems have mechanisms to cope and recover from this stress. what terms describes the ability of sahel regions to cope through drought cycles?

Several bird species feed in a certain species of tree. each bird species feeds in a different part of the tree. which statement is true of these bird species? a. they have adapted to different niches due to competition b. they have a carnivorous relationship with the tree species. c. they have adapted to different niches due to predation d. they have a symbiotic relationship with the tree species.