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
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Let's think first: 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.... So the answer is [(F)]

Organisms in which class have beaks that are generally adapted for the food they eat?
Options:
- (A) apples
- (B) Mammalia
- (C) koalas
- (D) voles
- (E) Agnatha
- (F) Aves
- (G) Reptilia
- (H) edible
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Let's think first: Bird beaks are generally adapted for the food they eat. All birds are placed in the Class Aves. Organisms in the class Aves have beaks that are generally adapted for the food they eat.... So the answer is [(F)]

Specialization occurs when competing groups of interbreeding individuals evolve different what?
Options:
- (A) color of leaves
- (B) fur and fat
- (C) forces
- (D) colors
- (E) frontal zones
- (F) graptolites
- (G) sensory neurons
- (H) adaptations
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Let's think first: Specialization occurs when competing species evolve different adaptations. Species is a group of interbreeding individuals. Specialization occurs when competing groups of interbreeding individuals evolve different adaptations.... So the answer is [(H)]

_ have the amazing capacity to regrow segments.
Options:
- (A) ferns
- (B) arachnids
- (C) roots
- (D) earthworms
- (E) anthropods
- (F) crustacean
- (G) loose soil
- (H) root growth
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Let's think first: Annelids have the amazing capacity to regrow segments that break off. Earthworms Earthworms are in the phylum Annelids. Earthworms have the amazing capacity to regrow segments that break off.... So the answer is [(D)]

Individuals who move into or out of a community increase:
Options:
- (A) homogeneity
- (B) energy usage
- (C) power
- (D) monoculture
- (E) competition
- (F) adding heat
- (G) population
- (H) gene flow
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Let's think first: Gene flow occurs when individuals move into or out of a population. Community health focuses on the health of populations or groups. Gene flow occurs when individuals move into or out of a community.... So the answer is [(H)]

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
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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)]