The purpose of the Open Door policy was to provide the United States with access to trade with China.
Answer: Option A
Explanation:
In order to promote trade with China U.S. proposed Open Door policy in 19th century. This policy essentially professed that trade in China will be open to all the countries equally.
In 1899, John Hay who was U.S. Secretary of State had send the Open Door Note to all the major powers of Europe proposing this policy.
This policy was professed for avoiding the situation where any one power or country would establish its control over the trade with China. Hence the motive or purpose behind this policy was ensuring that U.S. has access to the trade with China.
The option that is not in the proper chronological order is Homo habills, Homo erectus, Jericho, early Natuffian settlements.
What is the correct order?
The Homo Habilis came before the Homo Erectus man because the Homo Habilis followed from the Australopithecus earlier ancestor.
The early Natuffian settlements came before the Jericho settlement however, and were some of the earliest people involved in the Neolithic Revolution.
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A food resource disappears in a pond, and some frogs in a population can eat the remaining food source, while others cannot.
Explanation:
The natural selection among a species occurs when there are some major changes in the environment, most often related to the availability of food sources. In that kind of a situation, some of the individuals will be able to survive and use the remaining food sources, while some not. The ones that will be able to survive will be the stronger and more adapt.
In this scenario, we have a food resources disappearing from the environment of the frogs, so a food shortage occurs. The frogs that are stronger and able to consume the remaining food sources will be the ones that survive, while the weaker ones will be die out. This will result in a natural selection where only the best individuals of the species survive and reproduce in the given circumstances.
Factors that prompt natural selection are:
- changes in the food sources
- climate changes
- major natural hazards
- destruction of the habitat
- increased competition from other species
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