Line 1: *Courtship is behavior that is intended to attract a mate. Complex courtship rituals precede mating. Complex rituals are behavior that are intended to attract a mate.*
*(C)*
Line 2: *What are behavior that is intended to attract a mate?
Options:
- (A) a doorbell
- (B) firm hugs
- (C) Complex rituals
- (D) Riding a bike
- (E) Behaviour modifications
- (F) Magnets
- (G) honeybees
- (H) Friendship*

Logic of a solution: *Ethanol is produced by alcoholic fermentation of the glucose in corn or other plants. Glucose, a type of sugar, is the body's fuel. Ethanol is produced by alcoholic fermentation of the sugar in corn or other plants.*
*(B)*
The original question: *What is ethanol produced from?
Options:
- (A) coal
- (B) sugar
- (C) SO2
- (D) animal fat
- (E) paper
- (F) salts
- (G) Trees
- (H) Oak*

Line 1: *Fish have a centralized nervous system with a brain. Amphetamines stimulate the central nervous system. Fish can be stimulated with amphetamines.*
*(E)*
Line 2: *What water dweller can be stimulated with amphetamines?
Options:
- (A) pearls
- (B) algae
- (C) swea
- (D) otters
- (E) fish
- (F) humans
- (G) sharks
- (H) sponges*

Logic of a solution: *Some parasites kill their host, but most do not. Leeches are external parasites. Some leeches will kill their host, but most do not.*
*(H)*
The original question: *Some what will kill their host, while others won't?
Options:
- (A) barnacles
- (B) producers
- (C) scavengers
- (D) insects
- (E) cigarettes
- (F) fungi
- (G) plants
- (H) leeches*

Line 1: *Cancer is a disease that occurs when the cell cycle is no longer regulated. And leukemia and lymphoma are forms of cancer. Leukemia is a disease that occurs when the cell cycle is no longer regulated.*
*(E)*
Line 2: *What is a disease that occurs when the cell cycle is no longer regulated?
Options:
- (A) dangerous
- (B) illness
- (C) Smoking
- (D) Mumps
- (E) Leukemia
- (F) parasites
- (G) Measles
- (H) Diabetes*

Line 1: *Air pollution harms the respiratory and circulatory systems. An example of an air pollution reaction is the production of photochemical smog. Smog harms the respiratory and circulatory systems.*
*(C)*
Line 2:
*What affects the respiratory and circulatory systems in the body?
Options:
- (A) HIV
- (B) sulfur
- (C) smog
- (D) stress
- (E) fever
- (F) sweat
- (G) heat
- (H) tar*