Which best describes the tongue, ears, and nose? A) sense organs that are part of the central nervous system
B) sense organs that are part of the peripheral nervous system
C) internal organs that are part of the central nervous system
D) internal organs that are part of the peripheral nervous system

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

Amale bird-of-paradise uses a dance to attract mates in which it flaps its tail feathers on the ground and jumps around a potential female mate. a different male bird-of-paradise does a similar dance but it jumps around the female in the opposite direction. the female bird is only attracted to one style of dance, in one direction.

Which enzyme is responsible for “unzipping" the dna by breaking the hydrogen bonds between the nucleotides?