Logic of a solution: *Adult sponges are sessile. Sessile Attached permanently, immobile. Adult sponges are attached permanently and cannot move.*
*(G)*
The original question: *What are attached permanently?
Options:
- (A) Veins and arteries.
- (B) sensory neurons
- (C) barnacles
- (D) tadpoles
- (E) seahorses
- (F) alligators
- (G) adult sponges
- (H) an organism's body*

Line 1: *Running water is better able to dissolve oxygen and nutrients than standing water. Also, running water in rivers is the major force of erosion on the surface of the earth. Rivers are better able to dissolve oxygen and nutrients than standing water.*
*(G)*
Line 2: *Which body of water would be able to dissolve oxygen and nutrients the best?
Options:
- (A) NaCl
- (B) Lake
- (C) Puddle
- (D) Pond
- (E) rain
- (F) CO 2
- (G) River
- (H) sugar*

Logic of a solution: *Producers make food from inorganic molecules. Plants are known as producers . Plants make food from inorganic molecules.*
*(B)*
The original question: *Plants make food from what?
Options:
- (A) Chemical energy
- (B) inorganic molecules
- (C) photosynthesis
- (D) Light passing through water
- (E) direct energy
- (F) absorb light energy
- (G) Organic compounds
- (H) In their leaves*

Line 1: *Chordates have a complete digestive system and a closed circulatory system. Shock is a disruption of the circulatory system. Chordates can experience shock.*
*(G)*
Line 2: *What can chordates go through?
Options:
- (A) disease
- (B) loss
- (C) skin
- (D) alveoli
- (E) death
- (F) painful
- (G) shock
- (H) illness*

Logic of a solution: *Genes that are located on the same chromosome are called linked genes. Chromosomes are molecules of DNA complexed with proteins. Genes that are located on the same molecules of DNA complexed with proteins. are called linked genes.*
*(H)*
The original question: *What are genes that are located on the same molecules of dna complexed with proteins called?
Options:
- (A) bioaerosols
- (B) solid, liquid, gas
- (C) interact
- (D) sensory neurons
- (E) organs
- (F) deltas
- (G) more abundant
- (H) linked genes*

Logic of a solution: *Many corals secrete an exoskeleton that builds up to become a coral reef. An insect has a hard outer covering called an exoskeleton. Many corals secrete a hard outer covering that builds up to become a coral reef.*
*(H)*
The original question:
*Many corals secrete what to form a coral reef?
Options:
- (A) Chlorophyll
- (B) salt and water.
- (C) The area was once underwater
- (D) Chemical energy
- (E) aqueous solution
- (F) Organic compounds
- (G) gastropod shells
- (H) hard outer covering*