The North Atlantic Right Whale, Eubalaena glacialis, was called the "right whale" because they were the best whale for early whalers to kill. They have long baleen and lots of blubber and oil. When killed, they could be towed back to land for processing because they float. They once numbered in the millions, but the entire population of the species is now less than 400. The history of the right whale is an example of .

over-exploitation

Explanation:

The meaning of over-exploitation regarding the animals, can be described as the harvesting of an organism to the point of diminishing return,that is , there is drastic drop in the number of the said organism. It is also known as over-harvesting.

It should be understood that if over-exploitation is not stopped or controlled accordingly , it will definitely lead to the extinction of the organism. this means that , the organism will vanish or will not be seen again on the surface of the earth.

In this case, over-exploitation has really affected Eubalaena glacialis, and this can be seen in the drastic reduction in its number from millions to just 400. And if this act in not rightly controlled , it will result to the extinction of the North Atlantic Right Whale.

two jet streams that directly affect the formation of weather in the continental part are a polar jet and a subtropical jet. they are responsible for the transportation of weather systems, which directly affect people. the polar front is the boundary between cold air from the north pole and warmer equatorial air. both the polar jet and the subtropical jet blow from the west to the east, and follow the boundary between cold and warm air.

the strongest jet streams are polar jets, while subtropical jets are somewhat weaker.

the right answer is c. the polar jet stream is generaly stronger than the subtropical jet stream.