Chain-of-thought: Climate is the average weather in an area over a long period of time. An era is a period of time in which events occur. Climate is the average weather in an area during an era.
Q: The average weather in an area during an era is called:
Options:
- (A) Summer
- (B) epoch
- (C) good
- (D) autumn
- (E) time period
- (F) mild
- (G) Pleistocein
- (H) climate
A: (H)
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Chain-of-thought: Marine biomes are found in the salt water of the ocean. Another animal that lives within the Marine Biome is a sea tiger. Sea tigers are found in the salt water of the ocean.
Q: Where is the sea tiger found?
Options:
- (A) eroded
- (B) ocean
- (C) warm
- (D) fossils
- (E) dense
- (F) ligt
- (G) embryos
- (H) dead
A: (B)
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Chain-of-thought: Organs of excretion make up the excretory system. Leptospiral organisms cause infection in the kidneys and are excreted in urine. Kidneys are part of the excretory system.

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
Q: What is part of an animal's excretory system?
Options:
- (A) alveoli
- (B) garbage chute
- (C) pollen
- (D) glucose
- (E) bloodstream
- (F) kidneys
- (G) food
- (H) intake
A: (F)
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