The Sahara, the largest hot desert in the world, covers 3.3 million square miles and is located in the northern part of Africa. The Kalahari Desert, located in southern Africa, covers 362,500 square miles. The Namib Desert, the world's oldest desert, is found in the southwestern portion of the continent and covers 100,000 square miles.
The ability for a study to reveal a statistically significant difference between the levels of an independent variable when one truly exists is known as power. A statistical test's power is the probability that rejecting the null hypothesis is valid. It can be calculated by the expression Power = 1 - beta where beta is the probability of a type II error.
Answer: The root server.
Explanation: The root name server is a name server which controls the root zone of the Domain Name System (DNS) of the Internet. The server is directly responsible for answering requests for records located in the root zone and answers other requests by returning a list of the authoritative name servers. The root name servers are a very vital part of the Internet system because they are the first step in resolving human readable host names into IP (Internet protocol) addresses that are used in transfer of information between Internet hosts.
1. They wanted to manifest their destiny.
2. They wanted to give more farmland to the citizens of the U.S.