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:
The main issue in the argument is: "<u>Egypt President bad economical handling politics and corruption led him to resign, instead of the influence or comments of United States President Mr. George W. Bush</u>."
Answer: August 15, 1947
Independence Day in India occurs on August 15 of every year. It celebrates the date in 1947 when the Indian Independence Act came into effect, which established India and Pakistan as separate countries, no longer under British imperialist rule.
Explanation:
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The area in which <span>agriculture begin to develop between 9000 bce and 1000 bce is: Modern day central Argenina.
The southern American region has a nutrient rich soil and perfect warm temperature that support the majority of plants. This provided agricultural sector the opportunity to flourish</span>
The correct answers to these open questions are the following.
The factors that reduce helping behavior are the negative of the people who are offered the help and the improper circumstances to help others. The effects of being helped are that we can lend a helping hand to the ones in need. We feel that we are doing the right thing when we can help others. And the help is unconditional when we know that the other people have no ways to return the favor or the help.
However, sometimes the phenomenon of helping behavior induces negative reactions. The factors that lead to negative reactions among people being helped are, for instance, that they could always expect to be helped and we limit their own capacity to thrive. If people are always expecting altruism form others, they get used to and instead of making an effort or work hard, they prefer to be victims and expect other people to have compassion and also to help them.
