Answer:
The Rocky Mountains formed 80 million to 55 million years ago during the Laramide orogeny, in which a number of plates began sliding underneath the North American plate. The angle of subduction was shallow, resulting in a broad belt of mountains running down western North America.
Explanation:
1) Mapping
2) Tracking
3) Military Purposes
Answer:
Drought, improve the irrigation system
Explanation:
Because Africa is such a hot continent, lots of water gets dried up and evaporate. If we could have a better irrigation system and use rivers from around the continent, Africa could potentially start farming with the water they gain from the improved irrigation system.
Answer:
The founder effect, inbreeding, and genetic drift
Explanation:
- <u>The dunkers are those who are a religious group of people who have moved from the Germany to the state of Pennsylvania in the mid-1700 s. They don't marry outside their community. </u>
- And as of now, they are considered to be genetically strong from the rest of the populations as they signify the founder effect and traces of interbreeding with genetic drift.
- <u>This occurs to a very small number of people in the larger populations. Thus making them unique and resistant to the others.</u>
The magnetic stripes on the ocean floor was a theory that scientists created. It was said that the patterns of the rock, and we all know that the earth acts like a magnet (north and south poles). It was said that Earth's magnetic poles have reversed themselves many times during the Earth's history.
The rock of the ocean floor contains iron. The rock began as molten material that cooled and hardened. As the rock cooled, the iron bits inside lined up in the direction of Earth’s magnetic poles.
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