Answer:
Right choice:
Africans crossed into South America when Africa and South America were one continent.
Explanation:
Such a statement is totally absurd. Humans as a species had not appeared on planet Earth when present-day Africa and South America were part of the same land mass hundreds of millions year ago. So, African could not cross to South America in the times of Pangea, the only megacontinent in the planet´s evolution. The other options are theories of the origins of man in the Americas, though there´s no consensus in the academic community.
Answer:
need the rest of the question
Explanation:
Answer:
a. how would an economist explain the decline of the alaska king crab fishery?
According to economist, the decline of the Alaska king crab fishery could be compared to Law of diminshing returns. This simply means that, the optimal fishing point was reached before the fishes available started declining leading to the fishing bust that happened in 1980s.
b. explain two programs you could institute to protect the fishery and still allow some crabbing again.
Fishing Time policy: This program would involve the restriction of the fishing activities carried out in the alaska to a given time frame. For example, from september to december. Rather than fishing always as was done.
Fishing Quantity Policy: This program would in involve the restriction of the quantity of fishes to be gotten in the cook inlet and bristol bay by the fishing companies. For example, each company is expected to take only 50kg worth of fish once a week rather than fishing unlimitedly each day.
c. canadians have been very successful in farming salmon in coastal fiords along the coast of british columbia. why have they been successful with salmon when the crab fishery crashed?
This is because, their are series of policies that tends to guide the farming of salmon in the coastal fiords by the Canadians. And, also, salmon is not as demanding as the King Crab fishes.
Explanation: