Answer:
The sea star could be called a(n) keystone species.
Explanation:
The concept of keystone species was introduced by zoologist Robert T. Paine, in 1969. <u>A keystone species has a fundamental role in influencing an ecosystem, helping maintain the structure within an ecological community. The abundance or lack of the keystone species will determine the abundance or lack of other species as well.</u> It is common to use lions or wolves as examples of keystone species. If they disappear, certain animal populations that are usually hunted by them will prosper indiscriminately. That will drastically change the ecosystem, perhaps even leading it to its collapse. As we can see, the sea star describe in the passage is responsible for controlling the mussel population. The sea star is, therefore, a keystone species, preventing the overcrowding of mussels.
Answer:
True
Explanation:
This is true because most dominant parties always win the elections, yes third party candidates always try to prove to the public what they can do, but dominant party always find there way around wining the election due to there dominant force in politics.
Some voters also believe they most dominant party will rig the election and third parties dont have a chance that is why they wont bother voting for the third party because they wont win, actually the third party candidates always made good point in election campaign but the chances for them to win are always slim that is why they are inclined to vote for a dominant party candidates.
Answer:
Mobility is measured by the association between parents' and adult children's socioeconomic standing. Social class affects a person's economic situation, status and power, which in turn affect their life chances.
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Prosocial behavior is characterized by behavior that is beneficial to other people or to society as a whole.
<u>Answer
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The social science that has been used here is economics.
<u>Explanation:
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- The discipline of economics has a vast scope of range and applicability.
- It is not only concerned with the finances but also with the planning and utility of resources.
- The knowledge of economics is critical for the development of an individual as a sound and responsible citizen.
- Economics is also closely associated with many other branches of social science like that of geography, political science, etc.
