Different kinds of sedimentary rocks exist because
A. they were formed in different places
B. their formation took different lengths of time
C. they were formed by sediments from different rocks
D. they have been cut differently
I THINK ITS C is that right?
Right.
Can you explain it?
http://geology.com/rocks/sedimentary-rocks.shtml
What uses wind to generate electricity?
windmills
Which source is not a source for fossil fuels?
coal mine
ancient swamps
ancient living organisms
corn fields