What kind of animal lives in most terrestrial, freshwater and marine habitats?
Options:
- (A) animals
- (B) swimming
- (C) snails
- (D) tortoises
- (E) barnacles
- (F) swea
- (G) protected
- (H) a fish
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Let's think first: Mollusks live in most terrestrial, freshwater, and marine habitats. Mollusks in the diorama include snails and clams. Snails live in most terrestrial, freshwater and marine habitats.... So the answer is [(C)]

Earthworms can regrow their segments that break off and eat what?
Options:
- (A) fungi
- (B) stem
- (C) soil
- (D) nektar
- (E) meat
- (F) deer
- (G) dirt
- (H) birds
--
Let's think first: Annelids have the amazing capacity to regrow segments that break off. Earthworm Jim the greatest soil munchin' annelid fansite has been re-located. Earthworms are soil eating and can regrow their segments that break off.... So the answer is [(C)]

Which of the following uses energy that comes from body heat?
Options:
- (A) kinetic energy
- (B) evaporation of perspiration
- (C) kinetic friction
- (D) evaporation of snow
- (E) Transfers energy
- (F) a rock rolling down a hill
- (G) a fire burning near a campsite
- (H) converting mass to energy
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Let's think first: Evaporation of sweat uses energy, and the energy comes from body heat. Diaphoresis is a fancy medical term for perspiration or sweating. Evaporation of perspiration uses energy and the energy comes from body heat.... So the answer is [(B)]

Microtubules help prokaryotes _.
Options:
- (A) live
- (B) dense
- (C) store
- (D) grow
- (E) work
- (F) move
- (G) growth
- (H) ferns
--
Let's think first: Flagella help prokaryotes move. Cilia and flagella are composed of microtubules. Microtubules help prokaryotes move.... So the answer is [(F)]

Male dogs use_ in urine to mark their territory.
Options:
- (A) ammonia
- (B) Chemical energy
- (C) proteins
- (D) semiochemicals
- (E) animals
- (F) heat produced
- (G) nitric oxide
- (H) They have thick fur
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Let's think first: Male dogs use pheromones in urine to mark their territory. Pheromones are a sub-category of semiochemicals. Male dogs use semiochemicals in urine to mark their territory.... So the answer is [(D)]

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
--
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)]