These improvements in outcomes have surfaced amidst a number of other important
changes in the environment as well, including significant technological progress and better economic policies.
They are very sensitive to
changes in their environment which allows them to react quickly, and they have a natural drive to take charge of a situation, and strive to win.
Thus, the polar bear we should not under - estimate the importance of the polar bear as a key species indicating serious
changes in the environment caused by global warming.
As with the asteroid though, it wouldn't wipe out every species, just the ones that couldn't cope with the
drastic change in environment, dinosaurs couldn't handle it.
Babies are particularly sensitive to
chemical changes in their environment because any short - term alterations can have life - long consequences by disrupting proper developmental programming.