The process by which pure water is separated from seawater is called desalination
Indicate whether the statement is true or false
true
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With the aid of a diagram, show why an intensifying surface low-pressure centre, located just east of a deep upper-level trough, will often move in a northeasterly direction.
What will be an ideal response?
The distance from Earth's center to its outer surface (that is, the radius of the solid Earth) is approximately
a) 637 km b) 6,370 km c) 63,700 km d) 637,000 km e) 6,370,000 km
What is the greenhouse effect? List the greenhouse gases
What will be an ideal response?
If a side stream feeds coarse gravel into a river with a sandy bottom, what does the river do about it?
a. ?The river flushes it down into the valley. b. ?The slope of the riverbed builds up until it is steep enough to transport the size of gravel supplied, or until a flood carries it downstream. c. ?The gravel dams the river channel. d. ?The gravel works down through sediments in the riverbed until it reaches bedrock. e. ?The water slows down because the larger sediment gets in the way.