What are behavior that is intended to attract a mate?
Options:
- (A) a doorbell
- (B) firm hugs
- (C) Complex rituals
- (D) Riding a bike
- (E) Behaviour modifications
- (F) Magnets
- (G) honeybees
- (H) Friendship
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Let's think first: Courtship is behavior that is intended to attract a mate. Complex courtship rituals precede mating. Complex rituals are behavior that are intended to attract a mate.... So the answer is [(C)]

What live mainly in shallow coastal waters?
Options:
- (A) Sea species
- (B) Coast guards
- (C) animals
- (D) Live Whales
- (E) Shallow people
- (F) fur seals
- (G) a fish
- (H) parasites
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Let's think first: Marine species live mainly in shallow coastal waters. Marine Science Marine science is the study of the sea. Sea species live mainly in shallow coastal waters.... So the answer is [(A)]

What do things that cannot make their own food need as a nutrient?
Options:
- (A) Energy
- (B) metal
- (C) animals
- (D) mud
- (E) Energy.
- (F) protein
- (G) prototype
- (H) fungi
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Let's think first: Heterotrophs are living things that cannot make their own food. Proteins are an essential nutrient for heterotrophs . Living things that can't make their own food need protein.... So the answer is [(F)]

An animal's outer shell protects internal organs and:
Options:
- (A) food and shelter
- (B) epidermal
- (C) Epidermis
- (D) all matter
- (E) soft tissues
- (F) alveoli
- (G) warmth
- (H) layers of fat
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Let's think first: Bone provides protection for soft tissues and internal organs. Bones provide an outer shell to protect our internal organs. Soft tissues and internal organs need an outer shell for protection.... So the answer is [(E)]

Most of what type of animal is known for having a shell?
Options:
- (A) fossils
- (B) toads
- (C) eggs
- (D) swea
- (E) small
- (F) insects
- (G) porous
- (H) snail
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Let's think first: Most mollusks have shells. Among mollusks, the golden snail is a survivalist. Most snails have shells.... So the answer is [(H)]

What is called when plants grow toward the sun or an artificial light?
Options:
- (A) Exfoliation
- (B) Brownian motion
- (C) heat energy
- (D) phototropism
- (E) photovoltaic
- (F) autumn
- (G) peachleaf willow
- (H) mitosis
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Let's think first: Plants exhibit phototropism, or growing toward a light source. Many light sources such as the sun and most artificial lights produce unpolarized light. Plants exhibit phototropism, or growing toward the sun or artificial light.... So the answer is [(D)]