Tigers and lions are different species because their offspring (the liger) is infertile they are geographically separated in asia and africa the tiger has stripes, the lion does not. they have a type of pre-mating isolation

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

What environmental cues and landmarks do the geese use to determine the timing and direction of their migration over the mountains? how do they find their way?

Residential construction is expanding in florida, the expansion has caused fragmentation of habitats, one of the results of the increased construction is a decrease in the number of large predators such as the coyote, black bear and pool panther, which will be the most immediate local result of this fragmentation? 1)large predators will become extinct 2)decrease in middle sized predators 3)increase in population of top carnivores 4)increase in population of prey species