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.
Speak softly: stay calm and speak to others rationally without forcing your opinion on others.
Carry a big stick: know you have huge assets and powers that can be used only if necessary.
Foreign Policy: TR wanted to deal with other countries in a peaceful, non-threatening manner, but would remind other countries of the vast US powers (big stick) if necessary.
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Answer:
C) Quotas
Explanation:
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The correct answer is methylation.
This process refers to the addition of methyl groups to the DNA molecule, when the activity of such DNA segments is slightly altered. The more we age, the less methylation there is, which is why the genes of the elderly are different from those of young people.
Answer:
Satisficing
Explanation:
It is a decision making strategy which aimed to purposed a satisfactorily result. Satisficing concentrate on realistic efforts when encountering the task. This strategy aims to focus on the optimal level of solutions. The theory of satisficing was found to be applied in field economics, artificial intelligence, and sociology. Satisficing is a strategy adopted by an organization that seeks to meet the minimal level of expectancies for credits. This contradiction put to maximize the profit by combined attempts that put the organization high demands on the performance crosswise sales, marketing, and other departments.