Answer: Lung breathing: Mammals, birds, reptiles, and some amphibians.
Gill breathing: Fish and crabs.
Tracheal breathing: insects, centipedes, and spiders.
Skin respiration: Some amphibians, frogs.
Began to claim land in North America
When George W. Bush was president, he changed America's security policy as a result of the September 11 attacks from one of <u>reactivity </u>to <u>proactivity</u>.
<h3>How did America's security policy change after 9/11?</h3><h3 />
Before 9/11, the U.S. were not very proactive in seeking out terrorist threats which led to lapses in security.
After 9/11 however, the U.S. began to actively watch out for terrorist activity with unprecedented monitoring of civilian and foreign communication.
Find out more on U.S. Security policy at brainly.com/question/438784.
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Answer:
The Alps and the Apennine mountains
Explanation:
The Alps (Italian name: <em>Alpi)</em> are located in the north of Italy. The Alps are about 1,200 kilometres long. This is the highest mountain range system lying entirely in Europe. The Apennines (Italian name: <em>Appennini) </em>extend over 2/3 of the peninsula.