Line 1: *Mammals breathe with the help of a diaphragm. Common dolphins are mammals. Dolphins breathe with the help of a diaphragm.*
*(F)*
Line 2: *What does a diaphragm help a dolphin do?
Options:
- (A) swimming
- (B) rest
- (C) stay warm
- (D) smell
- (E) see
- (F) breathe
- (G) eat
- (H) survive*

Logic of a solution: *Cells that divide uncontrollably may form a tumor, or abnormal mass of cells. Tumor Tumors are masses of neoplastic origin. Cells that divide uncontrollably may form masses of neoplastic origin.*
*(B)*
The original question: *Cells that divide uncontrollably may form _.
Options:
- (A) masses of eukaryotic origin.
- (B) masses of neoplastic origin
- (C) cause people to become sick.
- (D) Microscopic organisms
- (E) masses of prokaryotic origin.
- (F) masses of epithelial origin.
- (G) Veins and arteries.
- (H) Wither and die*

Line 1: *Chemical bonds form when substances react with one another. All substances are composed of molecules. Chemical bonds form when molecules react with one another.*
*(E)*
Line 2: *What forms when molecules react with one another?
Options:
- (A) biochemistry
- (B) Chemical energy
- (C) Energy.
- (D) atoms
- (E) chemical bonds
- (F) elements
- (G) flow of electrons
- (H) Organic compounds*

Logic of a solution: *Male dogs use pheromones in urine to mark their territory. Pheromones are natural aphrodisiacs. Male dogs use natural aphrodisiacs in urine to mark their territory.*
*(A)*
The original question: *What do male dogs use in urine to mark their territory?
Options:
- (A) Natural aphrodisiacs
- (B) competing for resources
- (C) Tails
- (D) Urine cleaner
- (E) Something coming from a gland
- (F) Chemical energy
- (G) an area swollen with pus
- (H) Chew toys*

Line 1: *Vertebrates are all chordates that have a backbone. Invertebrates are animals who lack a backbone or spinal column. Vertebrates are all chordates that have a spinal column.*
*(G)*
Line 2: *What do all vertebrates have that invertebrates don't?
Options:
- (A) sensory neurons
- (B) fur and fat
- (C) bones and joints
- (D) a jaw bone
- (E) kinetic energy
- (F) Chemical energy
- (G) a spinal column
- (H) a set of gills*

Line 1: *Muscles can only contract. Muscle size comes from lifting heavy weights. Contracting comes from lifting heavy weights.*
*(D)*
Line 2:
*What comes from lifting heavy weights?
Options:
- (A) sizing
- (B) Dehydration
- (C) kinetic energy
- (D) contracting
- (E) Energy
- (F) forces
- (G) destroying
- (H) embellishing*