Possibly because the ocean is frozen in the north and it is too cold with no goods to ship.
By giving you explained details and using defining word and How the author used specific names.
Answer:
It suggests that the gray wolves after returning to the list of protected species, increased their population again.
Explanation:
In the article the author shows how North American gray wolves have the ability to return to situations that are favorable to them. First, wolves, when threatened with extinction due to the extreme decrease in population, were placed on the list of species that should be protected. After that time, the population of wolves rose, causing them to return to the state where they were not threatened with extinction. However, as time passed, this threat returned to this species of wolves, causing them to return to the list of protected species, increasing the population size and returning to their state without threat of extinction.
We are as clouds that veil the midnight moon;
<span>How restlessly they speed, and gleam, and quiver </span>