Line 1: *Amphibians have a relatively complex circulatory system with a three-chambered heart. All frogs are amphibians. Frogs have a relatively complex circulatory system with a three-chambered heart.*
*(A)*
Line 2: *What has a relatively complex circulatory system with a three-chambered heart?
Options:
- (A) frogs
- (B) a fish
- (C) salmon
- (D) alpacas
- (E) Man
- (F) Birds
- (G) sharks
- (H) pan*

Logic of a solution: *Amphibians have a relatively complex circulatory system with a three-chambered heart. Frogs, toads and salamanders are amphibians. Salamanders have a relatively complex circulatory system with a three-chambered heart.*
*(B)*
The original question: *Which animal has a circulatory system with a three-chambered heart?
Options:
- (A) animals
- (B) Salamander
- (C) fur seals
- (D) mammals
- (E) alpacas
- (F) a fish
- (G) warm-blooded
- (H) barnacles*

Line 1: *Animals adapt to cold temperatures. Sasquatches are obviously Earth-type animals. Sasquatches adapt to cold temperatures.*
*(E)*
Line 2: *What organism can adapt to cold temperatures?
Options:
- (A) insects
- (B) a fish
- (C) sensory neurons
- (D) sweating
- (E) Sasquatches
- (F) peachleaf willow
- (G) athletes
- (H) protect them*

Logic of a solution: *Heterotrophs are living things that cannot make their own food. Proteins are an essential nutrient for heterotrophs . Living things that can't make their own food need protein.*
*(F)*
The original question: *What do things that cannot make their own food need as a nutrient?
Options:
- (A) Energy
- (B) metal
- (C) animals
- (D) mud
- (E) Energy.
- (F) protein
- (G) prototype
- (H) fungi*

Line 1: *Viruses are not cells. Viruses Viruses are the smallest agents of disease. The smallest agents of disease are not cells.*
*(C)*
Line 2: *Cells do not include
Options:
- (A) harmful substances
- (B) sulfate particles
- (C) the smallest agent of disease
- (D) direct damage to the lungs
- (E) sub-units of species
- (F) Inches or fractions of inches.
- (G) Something with a head, thorax, and abdomen
- (H) Direct sunlight.*

Line 1: *Flatworms belong to the phylum Platyhelminthes. Flatworms are bilaterally symmetric. Bilaterally symmetric worms belong to the phylum Platyhelminthes.*
*(A)*
Line 2:
*What animal found on earth would belong to the phylum platyhelmintes?
Options:
- (A) bilaterally symmetrical worms
- (B) Something with a head, thorax, and abdomen
- (C) remains of prehistoric life
- (D) Something that makes plants green
- (E) Microscopic organisms
- (F) female sex cells
- (G) it helps plants in growing
- (H) share properties*