- the mountainous west, the Great Plains, the Canadian Shield, the varied eastern region, and the Caribbean.
Explanation:
North America can be divided into five physical regions: the mountainous west, the Great Plains, the Canadian Shield, the varied eastern region, and the Caribbean. Mexico and Central America's western coast are connected to the mountainous west, while its lowlands and coastal plains extend into the eastern region.
About 65 million years ago
Answer:
A telescope
astronomers use special telescopes to study x ray and gamma ray emmisons
Puerto Rico is located at A. Being off the coast of Florida, Mexico and countries in South America
