Logic of a solution: *Some insects can use their antennae to detect sound. When ears detect the vibrating air, signals are sent to the brain that are interpreted as sounds. Some insets can use their antennae to detect vibrating air.*
*(D)*
The original question: *Some insets can use their antennae to detect what?
Options:
- (A) light waves
- (B) photons
- (C) Electrical energy
- (D) vibrating air
- (E) new lands
- (F) water sources
- (G) bending light rays
- (H) electricity*

Logic of a solution: *Echinoderms have a unique water vascular system with tube feet. Echinoderms in the diorama include the crinoids and blastoids. Blastoids have a unique water vascular system with tube feet.*
*(B)*
The original question: *What has a water vascular system with tube feet?
Options:
- (A) humans
- (B) blastoids
- (C) bushes
- (D) orchids
- (E) Most plants
- (F) ferns
- (G) bacteria
- (H) the Sun*

Logic of a solution: *Immunity results from immunization. An effect is the result or outcome of some cause. Immunization causes immunity.*
*(H)*
The original question:
*What does immunization cause?
Options:
- (A) amino acids
- (B) sweating
- (C) immunoglobulin deficiency
- (D) nutrition
- (E) resistance
- (F) recovery
- (G) fever
- (H) immunity*