<span>The GDP calculation also accounts for spending on exports and imports. Thus, a country's GDP is a measure of consumer spending (C) plus business investment (I) and government spending (G) as well as its net exports, which is exports minus imports (X-M).</span>Apr 24, 2017<span>
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Over the past 50 years, six Nile Basin countries have built 25 hydroelectric dams.
The forces that move tectonic plates push deep rocks up to Earth's surface, and also push rocks at Earth's surface down to great depths. Tectonic plate motion may also lead to volcanic activity.
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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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<span>More than half of Africa's source of energy comes from coal. Its coal production and waste led to several environmental problems like wildfire and diseases. In one mine leak incident in Africa, last 1953 brought poison on the water supply killed thousands of marine life.</span>