Answer:
In the exceptionally cold winter of 1997, Lake Superior froze over between the Wisconsin mainland and Isle Royale. A pack of 8 wolves crossed the ice and reached Isle Royale, an island where they encountered a population of about a dozen wolves. It is estimated that the wolf population on Isle Royale has been isolated for over 100 years (~10 generations). The pack of 8 wolves that crossed the ice would be referred to as <u>founder population</u> and if the wolves interbreed with the island population, <u>genetic drift</u> will occur.
Explanation:
The founder effect occurs when a portion of a population (i-e the founders) separates from the old population to start a new population with different allele frequencies. Hence the pack of 8 wolves that crossed the ice would be referred to as <u>founder population</u> in the given scenario.
Genetic drift is defined as change in the allele frequencies in a population due to chance event. As in the given scenario, the pack of 8 wolves that crossed the ice, interbreed with the island population, thus change in the allelle frequency is occuring in the population , hence <u>genetic drift</u> will occur.
Answer:
Modern-day nations that occupy much of the territory of the Khmer Empire are Cambodia and Thailand, with smaller areas of it being in Vietnam, Laos, and China.
Explanation:
The Khmer Empire was a well-developed empire that was located in the mainland part of Southeast Asia. It was the dominant force in the region for several hundred years, and it managed to achieve multiple great things. This empire, at its peak, was so powerful that it managed to defeat the Mongols and stop their expansion in the region, even though the Mongols were very close to their base and were at the height of their power.
The majority of the territory of the Khmer Empire was located on the territories of modern-day Thailand and Cambodia, being spread on almost all of their territories. It was not just these two though, but the southern part of Vietnam, what is now the border area of Laos with Thailand, and even a little bit of southern China, were part of this great empire.
Answer:
Sir Francis Drake was the first englishman to circumnavigate the globe.
Explanation:
However, he was not the first European. Ferdinand Magellan is often credited with this but he died during the voyage and Sebastian Elcano took over the expedition. They sailed about 50 years earlier than Sir Francis Drake.
Answer:
1.Magma comes out of the rift valley.
2.Magma cools to rock and hardens.
3.Rock is pushed away as new rock is formed at MOR.
4.Oceanic crust and continental crust meet at the trench.
5.Oceanic crust bends down under the continental crust.
6.Gravity pulls rock towards mantle.
7.Rock melts to mantle.
The answer is number
hope this helps :)
