Logic of a solution: *Amphibians are the first true tetrapods, or vertebrates with four limbs. Bullfrogs eat other amphibians. Bullfrogs are of the class of creatures that were the first true tetrapods.*
*(D)*
The original question: *These belong to the class of creature that were the first true tetrapods:
Options:
- (A) millipede
- (B) crabs
- (C) four limbs
- (D) bullfrogs
- (E) gastropod
- (F) a fish
- (G) warm-blooded
- (H) insects*

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*

Logic of a solution: *Platypus females lay their eggs in a burrow. Burrows dug by badgers are also important in many areas. Platypus females lay eggs in a dug out area.*
*(G)*
The original question: *How do platypus lay eggs?
Options:
- (A) epidermis and dermis
- (B) on a flat plane
- (C) in a tree
- (D) fur and fat
- (E) during the day
- (F) it keeps an organism warm
- (G) in a dug out area
- (H) in the water*

Line 1: *Cells are the microscopic building blocks of organisms. Plants and animals are organisms. Cells are the microscopic bulding blocks of plants and animals.*
*(F)*
Line 2: *What are cells in plants and animals?
Options:
- (A) production of energy
- (B) absorb light energy
- (C) large building blocks
- (D) sub-units of species
- (E) cellulitis
- (F) microscopic bulding blocks
- (G) disease
- (H) microorganisms*

Logic of a solution: *Sight is the ability to sense light, and the eye is the organ that senses light. Eyes detect light, organized into images that fall on the retina. Eyes can detect images and see light using sight.*
*(B)*
The original question: *Eyes can detect images and see light using what?
Options:
- (A) vibrations
- (B) sight
- (C) lenses
- (D) sound
- (E) Energy.
- (F) Energy
- (G) touch
- (H) voltage*

Logic of a solution: *Sweating reduces body heat. Shivering produces heat in the body. Sweating and shivering have different effects on our core temperatures.*
*(B)*
The original question:
*What will make human temperatures go in a different direction from what sweating would do?
Options:
- (A) humidity
- (B) shivering
- (C) improve
- (D) energy usage
- (E) a blazing fire
- (F) hot air
- (G) harm them
- (H) Damages them*