Please describe how an acid-fast stain works. How does it get its name?

List two modern organisms that have pentameral symmetry

Modern whales developed their traits through natural selection what occurs during the process of natural selection

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