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Explanation:
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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Answer:
That person could be president Harry Truman or any of his close advisors or cabinet officials. The Truman administration adopted and put in practice the doctrine of containment of Soviet communism. The USSR was seen and understood as an expansionist power that wanted to promote communist subversion around the world, so the USA had to face that challenge and threat to Western democracy and free-market societies by all means possible.
Explanation:
All of the following are theories that historians have come up with to explain what caused the Salem witch hysteria except "<span> B. It was caused by a desire to distract citizens from conflicts with Native Americans on the frontier", since these issues were hard to mask.</span>
<span>Neil Armstrong was the first man to walk on the moon. <span>Apollo 11 blasted off on July 16, 1969. Neil Armstrong, Edwin "Buzz" Aldrin and Michael Collins were the astronauts on Apollo 11. Four days later, Armstrong and Aldrin landed on the moon. They landed on the moon in the Lunar Module.</span></span>
