Line 1: *Mammals conserve body heat with their hair or fur. Mammals include rabbits, foxes and coyotes. Foxes conserve body heat with their hair or fur.*
*(A)*
Line 2: *What conserve body heat with their hair or fur?
Options:
- (A) foxes
- (B) snakes
- (C) goats
- (D) whales
- (E) dogs
- (F) cats
- (G) humans
- (H) lizards*

Logic of a solution: *Hydrogen bonds cause water to expand when it freezes. Water is everywhere H20. Hydrogen bonds cause H20 to expand when it freezes.*
*(E)*
The original question: *Hydrogen bonds cause what to expand when it freezes?
Options:
- (A) salt
- (B) mercury
- (C) NaCl
- (D) lake
- (E) H20
- (F) rain
- (G) h2o
- (H) oxygen*

Line 1: *Playing is one way mammals and other animals learn how to behave. Cats are Mammals that Shed Dogs are Mammals that Wag their tails. Playing is one way dogs learn to behave.*
*(D)*
Line 2: *What is one way dogs learn to behave?
Options:
- (A) exercise
- (B) mating
- (C) ligt
- (D) playing
- (E) parties
- (F) slumber
- (G) firm hugs
- (H) Movement*

Logic of a solution: *Organisms cluster around hydrothermal vents in the ocean floor. Chimneys top some hydrothermal vents. Organisms cluster around chimneys in the ocean floor.*
*(D)*
The original question: *What do organisms cluster around in the ocean floor?
Options:
- (A) kalenchoes
- (B) ferns
- (C) bacteria
- (D) Chimneys
- (E) an object
- (F) alveoli
- (G) graptolites
- (H) allow growth*

Line 1: *Humans have collected and grown mushrooms for food for thousands of years. Mushrooms are also fungi. Humans have collected and grown fungi for food for thousands of years.*
*(E)*
Line 2: *What have humans have collected and grown for food for thousands of years?
Options:
- (A) sunlight
- (B) fungus
- (C) bread
- (D) salmon
- (E) fungi
- (F) dust
- (G) plants
- (H) edible*

Line 1: *Aggression is behavior that is intended to cause harm or pain. Curses are spells that are often intended to cause harm to another person. Curses are a form of aggression.*
*(A)*
Line 2:
*What is a curse?
Options:
- (A) a form of aggression
- (B) Something coming from a gland
- (C) after too much water received
- (D) forest is destroyed
- (E) friendly behavior
- (F) a form of love
- (G) nonaggressive
- (H) death and devastation*