Both the Yellow River and the Yangtze/Yangzi River.
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:
Explanation: The first inauguration of Franklin D. Roosevelt as the 32nd President of the United States was held on Saturday, March 4, 1933 at the East Portico of the United States Capitol in Washington, D.C. This was the 37th inauguration marked the commencement of the first term of Franklin D. Roosevelt as President and John Nance Garner as Vice President. It was the last inauguration to be held on the constitutionally prescribed date of March 4; the 20th Amendment, ratified earlier that year, moved Inauguration Day to January 20. As a result, Roosevelt's first term in office was shorter than a normal term (as was Garner's) by 43 days. This was also the last time the vice president took the oath of office on the Senate
It would be A. Punic Wars
