Polar bears are in danger of extinction in the future if globalwarming continues, as their habitat, Arctic sea ice, is shrinkingevery year, making it difficult for bears to have enough food tolast through the lengthening summers.With a population of nearly 25,000, the polar bear is not in dangerof extinction now.
1 In general, anything that is good for your heart is great for your brain. 2  Aerobic exercise is great for body and brain: not only does it improve brain function, but it also acts as a first aid kit on damaged brain cells.
When applied to exercise, aerobic refers to all exercise that requires oxygen to help produce energy. ATP. Stands for adenosine triphosphate. ATP is essentially the energy currency of the body. It is the breakdown of ATP that releases energy which the bodyâs tissues such as muscle can use to create movement.