Answer:
Volcanic rock (often shortened to volcanics in scientific contexts) is a rock formed from lava erupted from a volcano. ... Volcanic rocks and sediment that form from magma erupted into the air are called "volcaniclastics," and these are technically sedimentary rocks.
Explanation:
20. is Memphis Tennessee
21. is Knoxville Tennessee
it is impossible for a map projection to be accurate. the most common one is the mercator projection. Many projections have been tried but all very flawed. the most reliable form of a map is a globe but of course, it's not a projections...so.
Answer:
Shows longitude lines as parallel
Explanation:
It was used to help sailors navigate the globe, but it becomes warped near the poles
The answer is C: irrigation