Answer:
It's the Inner Core
Explanation:
It is the innermost layer of planet earth & composed primary of Iron and Nickel , This is because through the geological time Iron and Nickel which are heavier elements sank down and formed the core.
And plus, the Crust (The land you stand on when you walk outside) is made of soil and rock, and the Mantle (Under the Crust) is hot liquid like lava.
Answer: 3.6 seconds
Explanation: Geologic time is a way of measuring time based on events in the history of the Earth. If we compress this into one year, a single geologic year equals 4.6 billion years because the planet was formed 4.6 billion years ago.
Columbus arrived in the New World in August 1492, 528 years ago.
If 4.6 billion years = 1 year in geologic time,
528 years = 528 X 
=3.6 seconds
<em>(I broke the year down into seconds by breaking it down into days, then hours, minutes and seconds because the value is very small)</em>
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<em>So, if we compress geologic time into a single year, only 3.6 seconds have elapsed since Columbus arrived in the New World</em>
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Answer:
a. mountains, desert, bay, prairie
Answer:
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