[[Ques]]: Which animals have a circulatory system?
Options:
- (A) insects
- (B) mammals
- (C) fur seals
- (D) sharks
- (E) cows
- (F) squids
- (G) a fish
- (H) chickens
[[Ans]]: [Mollusks have a circulatory system with one or two hearts that pump blood. Interestingly, a squid is also a mollusk. Squids have a circulatory system.]
[(F)]

[[Ques]]: What are a major food source to organisms including humans?
Options:
- (A) leeches
- (B) earthworms
- (C) snails
- (D) plants
- (E) tapeworms
- (F) trees
- (G) potatoes
- (H) bushes
[[Ans]]: [Mollusks are a major food source for other organisms, including humans. Mollusks in the diorama include snails and clams. Snails are a major food source for other organisms, including humans.]
[(C)]

[[Ques]]: Evaporation of sweat uses what from the body?
Options:
- (A) expelled
- (B) Positive charges
- (C) all liquids
- (D) properties
- (E) Something to move
- (F) water vapor
- (G) kinetic energy
- (H) Cooling vapors
[[Ans]]:
[Evaporation of sweat uses energy, and the energy comes from body heat. Kinetic energy comes from heat. Evaporation of sweat uses kinetic energy from the body.]
[(G)]