Nephrons are the structural and functional units of the organ that filters what?
Options:
- (A) Light
- (B) Energy
- (C) Coffee
- (D) liquid
- (E) Air
- (F) Oxygen
- (G) Blood
- (H) Food
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Let's think first: Nephrons are the structural and functional units of the kidneys. Blood is filtered in the kidney. Nephrons are the structural and functional units of the organ that filters blood.... So the answer is [(G)]

What has good eyesight?
Options:
- (A) humans
- (B) fur seals
- (C) athletes
- (D) bears
- (E) goats
- (F) geckos
- (G) elephants
- (H) rabbit
--
Let's think first: Most reptiles have good eyesight and a keen sense of smell. Geckos are, in fact, reptiles. Geckos have good eyesight.... So the answer is [(F)]

What can decompose a bow?
Options:
- (A) Acids
- (B) Oak
- (C) CO 2
- (D) pine
- (E) erosion
- (F) Wind
- (G) water
- (H) Fungi
--
Let's think first: Fungi are the only organisms that can decompose wood. Bows are wood, and wood breaks. Only fungi can decompose bows.... So the answer is [(H)]