In order for a massive star to form a black hole, it must first
a )expand
b) emit x-rays
c) run out of fuel
d) begin rotating fast

Sweating and breathing is an example of differentiation specialization maintaining homeostasis metabolism

To sciences do not agree on which type of grocery bag is better for the environment what is most likely to come out come out of the disagreement

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