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.
<span>Two ways in which Latin American is involved in international affairs today are:
</span>1. Climate change emmission controls
2. Peacekeeping in the United Nations
With the exception of Mexico, all the larger Latin American economies are involved in UN peacekeeping operations. Mexico was not involved because its constitution did not permit the military to go out of the country until recently. Once the constitution changed, Mexico is now starting to participate in peacekeeping missions, starting with Haiti.
You are basically forcing people to fight for your cause. Your telling someone to fight for you not what they want.
By studying it we can tell how long life has existed in earth and how different plants and animals are related to each other.
Why do you need help? The answers are right in your book, you already have the answers.
