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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The correct answer is D) by selling their own government-granted land to farmers.
Railroad companies profit from the building of the transcontinental railroad by selling their own government-granted land to farmers.
With the passing of the Pacific Railway Act of 1862, the United States government authorized two companies to build the Transcontinental Road: the Union Pacific and the Central Pacific. These companies made possible the connection of the East with the West of the United States. The works ended in 1869, when both railroads met at Promontory, Utah, on May the 10th.
Hitler blamed the communists and the jews
Answer: women were important to the settlement house movement
Explanation:
Russians and formerly the Soviet Union called their spacemen cosmonauts. However, the United States and some other countries with space programs have used the word astronaut.
