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:
A. Reduced colonists' need for protec
tion against the French in Canada.
Well if you think back to your age you either played house or knights and dragons
Answer
Ego effectance
Explanation:
Ego effectance start to developed since early age, when we began to gradually learn about our own skillsets and capabilities that influence the way we think about our competence in dealing with various type of problems in our life. This is a form of natural defense mechanism that human develop in order to cope with survival demands.
In general, children who had good source of positive motivation (such as parents who do not stop motivating them even when they fail) tend to be able to measure their own competence in a more appropriate manner compared to children who don't have it.
Social Darwinism is an economic and social philosophy-
holding that a system of unrestrained competition will ensure survival of the
fittest. Andrew Carnegie rose to the top of the business world and justified his harsh practices with the method
of natural selection.
