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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By 1890, the United States had by far the world's most productive economy. American industry produced twice as much as its closest competitor--Britain. But the United States was not a great military or diplomatic power. Its army numbered less than 30,000 troops, and its navy had only about 10,000 seamen. Britain's army was five times the size of its American counterpart, and its navy was ten times bigger. The United States' military was small because the country was situated between two large oceans and was surrounded by weak or friendly nations. It faced no serious military threats and had little interest in asserting military power overseas.<span>
During the late 19th century, the idea that the United States had a special mission to uplift "backward" people around the world also commanded growing support. The mainstream Protestant religious denominations established religion missions in Africa and Asia, including 500 missions in China by 1890.</span>
The answer to you question
D
Answer:
Correct answer is C. Dividing China's history based on which dynasty ruled the country.
Explanation:
Option C is the only correct answer as we create periodization to divide history into quantified time blocks of time, with a goal to easily research what has happened in the past. Therefore dividing history of China according to the periods of reign of certain countries is one way of periodization.
Option A is not correct as this refers to the ways how someone measured time, not how he created periodization of certain periods and events.
Option B is not correct as this is description of historical events, not periodization of those events.
Last option is also not correct as it shows different accounts of certain historical events, not their periodization.
In general, the most powerful place for a woman to be in medieval society was the wife of a powerful man, preferably a king or noble person, since women themselves rarely held positions of power.
