1) You choose which college to go to: each college you don't choose is an opportunity cost
2) you choose which language to learn. You can't learn them all. If you decide to learn Chinese, you might be missing out on Spanish
3)Where do you want to do your exchange? if You choose one place, you're missing out all the other opportunities.
Answer:
If isolationism has become outdated, what kind of foreign policy does the United States follow? In the years after World War II, the United States was guided generally by containment — the policy of keeping communism from spreading beyond the countries already under its influence. The policy applied to a world divided by the Cold War, a struggle between the United States and the Soviet Union.
With the collapse of the Soviet Union in 1991, containment no longer made sense, so in the past ten years, the United States has been redefining its foreign policy. What are its responsibilities, if any, to the rest of the world, now that it has no incentive of luring them to the American "side" in the Cold War? Do the United States still need allies? What action should be taken, if any, when a "hot spot" erupts, causing misery to the people who live in the nations involved? The answers are not easy.
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Answer:
1. Bats and cats: <em>Homology</em>
2. Whales and sharks: <em>Analogy</em>
Explanation:
In Biology, homology refers to <u>the similarity of features from different species of organisms that share a common ancestor</u>. This is the opposite of analogy, which refers to <u>a feature that has a similar function but is not derived from a common ancestor</u>.
In this case, bats and cats have forelimbs adapted for locomotion. This is a case of homologous characters because they both are descendants of tetrapods - four-limbed animals. Therefore, even though cats and bats look completely different, they both share a similar feature: forelimbs, a characteristic feature from their common early mammalian ancestors.
On the other hand, whales (mammals) and sharks (fish) do not share a common ancestor. So, the fins are analogous structures: both have a similar function because both have adapted to an aquatic environment but they have completely separate evolutionary origins.
A duty of a responsible citizen to stand against littering on public places because it causes environmental degradation. will inform to the municipality or corporation about the littering.
Explanation:
Environmental degradation is caused by disposal of garbage, throwing of plastics and other non-biodegradable matter. Littering on public places cause bad smell, breeding ground of insects (mosquitoes, fly) that causes several health hazards and diseases like Cholera, Typhoid, Dengue etc.
To protect our environment we should stand against littering, create awareness among people by spreading the information about its harmful effect. Municipalities, Corporation should clear the road side dustbins everyday and provide moveable garbage dropper site at every corner of locality.
