Line 1: *Carbon cycles quickly between organisms and the atmosphere. Deforestation also disrupts the Carbon Cycle. Deforestation disrupts the cycle between organisms and the atmosphere.*
*(H)*
Line 2: *What disrupts the cycle between organisms and the atmosphere?
Options:
- (A) burning coal
- (B) Sulfur dioxide
- (C) replanting forests
- (D) solar system
- (E) Greenhouse gasses
- (F) chlorofluorocarbons
- (G) life cycle
- (H) deforestation*
Logic of a solution: *Cells vary in size as well as shape, but all cells are very small. Neurons are cells that are similar to other cells. Neurons are very small in size.*
*(H)*
The original question: *Which item found in the human body is smaller? 
Options:
- (A) the eyes
- (B) Epidermis
- (C) all matter
- (D) Fingernail.
- (E) Inches
- (F) Baby tooth.
- (G) Small eyelash.
- (H) Neuron.*
Line 1: *Most amphibians breathe with gills as larvae and with lungs as adults. All frogs are amphibians. Most frogs breathe with gills as larvae and with lungs as adults.*
*(B)*
Line 2: *What breathes with gills as larvae and with lungs as adults.
Options:
- (A) Salmon.
- (B) Frogs.
- (C) parasites
- (D) Whales.
- (E) Mice.
- (F) a fish
- (G) air
- (H) tortoises*
Logic of a solution: *Hormones control many cell activities, so they are very important for homeostasis. Homeostasis is the chemical equilibrium of the body. Hormones are very important for the chemical equilibrium of the body.*
*(F)*
The original question: *What is important for the chemical equilibrium of the body?
Options:
- (A) sleep
- (B) exercise
- (C) hydration
- (D) dish soap
- (E) eyesight
- (F) hormones
- (G) detergent
- (H) glucose*
Line 1: *Fish have a centralized nervous system with a brain. Sharks are a type of fish. Sharks have a centralized nervous system with a brain.*
*(D)*
Line 2: *What has a centralized nervous system with a brain?
Options:
- (A) Man
- (B) Birds
- (C) leeches
- (D) shark
- (E) evergreens
- (F) salmon
- (G) worms
- (H) pan*
Line 1: *Most protists have motility. Protists are the simplest of eukaryotes. The simplest eukaryotes have motility.*
*(C)*
Line 2:
*What do simple eukaryotes have?
Options:
- (A) Energy
- (B) fur and fat
- (C) Motility
- (D) bioaerosols
- (E) four limbs
- (F) pollen
- (G) glucose
- (H) Energy.*