Q: What kind of animal sometimes gets hiccups?
Options:
- (A) mammals
- (B) fur seals
- (C) fish
- (D) goats
- (E) humans
- (F) insects
- (G) worms
- (H) dogs
A: So, my chain of thought: Mammals breathe with the help of a diaphragm. Hiccups are a result of spasms of the diaphragm. Mammals sometimes get hiccups. The answer is (A).

Q: _ are aerobic
Options:
- (A) goats
- (B) plants
- (C) algae
- (D) moss
- (E) cells
- (F) chloroplast
- (G) complex
- (H) humans
A: So, my chain of thought: Cells cannot survive without oxygen. Bacteria that require oxygen are aerobic. Cells are aerobic. The answer is (E).

Q: What is considered to be part of macroevolution?
Options:
- (A) Man
- (B) genus
- (C) pollen
- (D) Birds
- (E) legumes
- (F) power
- (G) embryos
- (H) animals
A:
So, my chain of thought: Macroevolution occurs over geologic time above the level of the species. Species is a property of genus, genus is a property of family, etc. Macroevolution occurs over geologic time at the level of genus or above. The answer is (B).