Why might a speaker choose NOT to use contractions in a formal speech? A. Contractions are too short.

B. Contractions are rude.

C. Contractions are informal.

D. Contractions are improper.

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

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm

The hypothesis that evolution occurs at an irregular rate through geologic time is known as: directional evolution directional equilibrium punctuated equilibrium punctuated evolution