Look at this image. Gases spiraling into a black hole.

What is most likely the purpose of this illustration?

to reveal the beauty of outer space
to illustrate the size of a black hole
to show how gases move under the force of a black hole
to prove that scientists cannot photograph objects in space

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils