What kind of animal can live in large colonies and have complex behaviors?
Options:
- (A) arthropods
- (B) warm-blooded
- (C) birds
- (D) mammals
- (E) animals
- (F) honeybees
- (G) fur seals
- (H) fish
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Let's think first: Insects may live in large colonies and have complex social behaviors. Insects are just part of the Arthropod subdivision. Arthropods may live in large colonies and have complex social behaviors.... So the answer is [(A)]

What may be stored in sedimentary rock for millions of years.
Options:
- (A) Sand castles
- (B) Chemical energy
- (C) heat energy
- (D) Millions of dollars.
- (E) A fuel source.
- (F) Energy.
- (G) In sediment
- (H) Stored animal fur.
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Let's think first: Carbon may be stored in sedimentary rock for millions of years. Carbon is the fuel source. A fuel source may be stored in sedimentary rock for millions of years.... So the answer is [(E)]

When game animals move elsewhere, what else does?
Options:
- (A) relocation
- (B) prey animals
- (C) predatory animals
- (D) migratory birds
- (E) An object is seen
- (F) migrants
- (G) refract or absorb.
- (H) barks and snarls
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Let's think first: Migration is a type of movement that changes population size. Predatory animals migrate with the game animals. As movement causes a change in game population size, predatory population size changes, too.... So the answer is [(C)]

How do cells grow and repair themselves?
Options:
- (A) mitosis
- (B) alveoli
- (C) retina
- (D) rest
- (E) recovery
- (F) exercise
- (G) ligt
- (H) mechanical
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Let's think first: Cell division is how organisms grow and repair themselves. Mitosis is cell division. Organisms grow and repair themselves through mitosis.... So the answer is [(A)]

What can be a source of food for many species of fish?
Options:
- (A) Fully cooking the oysters
- (B) Organic compounds
- (C) beef
- (D) fishing poles
- (E) sessile organisms
- (F) barnacles
- (G) grass
- (H) gastropod shells
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Let's think first: Sponges are a source of food for many species of fish. Most sponges are sessile. Sessile organisms can be a source of food for many species of fish.... So the answer is [(E)]

What feeds on plankton and nonliving organic matter?
Options:
- (A) bacteria
- (B) barnacles
- (C) animals
- (D) sharks
- (E) pythons
- (F) graptolites
- (G) molluscs
- (H) bears
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Let's think first: Bivalves feed on plankton and nonliving organic matter. Bivalve molluscs are very common. Molluscs feed on plankton and nonliving organic matter.... So the answer is [(G)]