Is Current Warming Natural? In Earthâs history before the Industrial Revolution, Earthâs climate changed due to natural causes not related to human activity. Most often, global climate has changed because of variations in sunlight. Tiny wobbles in Earthâs orbit altered when and where sunlight falls on Earthâs surface.
Eel prey on fish and small crustaceans. Some eel have mouths consisting of a sucker surrounded with small teeth. The teeth pierce the scales and skin of fish and the eel sucks the blood for nourishment. Other species of eel have many sharp teeth and are able to bite and tear their prey into pieces to eat.
They can store extra food, and rocks used as tools, in these pockets. Sea otters have a high metabolic rate (that is, they use a high amount of energy) that is 2-3 times that of other mammals their size. Sea otters eat about 20-30% of their body weight each day. Otters weigh from 35-90 pounds (males weigh more than females). So, a 50-pound otter would need to eat about 10-15 pounds of food per day. The food sea otters eat can impact the entire ecosystem in which they live. Sea otters have been found to play a pivotal role in the habitat and marine life that inhabit a kelp forest.