Answer:
Convergent evolution; even though these animals are all different classes, they have developed similar features due to the environments they live in. We call these analogous features and the means by which they develop convergent evolution.
The condition that is most likely to be present in the region left by the melting glaciers in Alaska is that algae and fungi growing on bare rock. This is because environment in primary succession is essentially deprived of vegetation and several kinds of organisms. Thus, plants are unable to grow since the soil lacks nutrients.
Answer: "<span>barometric pressure" .
__________________________________________________</span>
