Ques and Ans: What do most salamanders use to find a mate?
Options:
- (A) olfaction
- (B) sound
- (C) seduction
- (D) fur and fat
- (E) heat energy
- (F) air
- (G) environment
- (H) water
(A)
Logic for the answer: Most salamanders use their sense of smell to find a mate. Olfaction is the sense of smell. Most salamanders use olfaction to find a mate.


Ques and Ans: What live mainly in shallow coastal waters?
Options:
- (A) Sea species
- (B) Coast guards
- (C) animals
- (D) Live Whales
- (E) Shallow people
- (F) fur seals
- (G) a fish
- (H) parasites
(A)
Logic for the answer: Marine species live mainly in shallow coastal waters. Marine Science Marine science is the study of the sea. Sea species live mainly in shallow coastal waters.


Ques and Ans: What falls decreasingly on the earth from the equator to the poles?
Options:
- (A) autumn
- (B) heat
- (C) chill
- (D) Vapor
- (E) Energy
- (F) cold
- (G) summer
- (H) Mass
(B)
Logic for the answer: Temperature falls from the equator to the poles. Temperature is a measure of the amount of heat. Heat falls from the equator to the poles.


Ques and Ans: 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
(F)
Logic for the answer:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
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.