Aggression is behavior that is intentionally what?
Options:
- (A) friendly
- (B) complex
- (C) loud
- (D) made
- (E) negative
- (F) quiet
- (G) abusive
- (H) kicked
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Let's think first: Aggression is behavior that is intended to cause harm or pain. Abuse means causing intentional pain or harm. Aggression is behavior that is intentionally abusive.... So the answer is [(G)]

Wetlands are extremely important
Options:
- (A) water conservation
- (B) global ecosystems
- (C) Desert Ecosystem
- (D) Terrestrial ecosystems
- (E) important habitats
- (F) the environment
- (G) food and shelter
- (H) Forest Ecosystems
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Let's think first: Wetlands are extremely important biomes. Biomes are global ecosystems. Wetlands are extremely important global ecosystems.... So the answer is [(B)]

What do catalysts do?
Options:
- (A) metabolic reaction
- (B) breathe
- (C) get chemical reactions started
- (D) Slowing the transfer of heat
- (E) A compound that donates proton
- (F) fertilize eggs
- (G) have a positive impact on the environment
- (H) inhibit chemical reactions
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Let's think first: All chemical reactions require activation energy to get started. Catalysts lower the activation energy for reactions. Catalysts help chemical reactions to get started.... So the answer is [(C)]

What are mollusks used for?
Options:
- (A) a herbivore diet
- (B) survival
- (C) a vegetarian diet
- (D) Converting waste.
- (E) Catch prey
- (F) an omnivore diet
- (G) an egg diet
- (H) animal transport
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Let's think first: Mollusks are a major food source for other organisms, including humans. Many organisms are omnivores with variable diets. Humans have variable diets and some consume mollusks as a major food source.... So the answer is [(F)]

What occurs when a male gamete swims to an egg?
Options:
- (A) permineralization
- (B) competition
- (C) movement
- (D) rapid expansion
- (E) fertilization
- (F) birth
- (G) copulation
- (H) ovulation
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Let's think first: Fertilization occurs when sperm swim to an egg inside an archegonium. Gametes in males are called sperm, and in women commonly referred to as eggs. Fertilization occurs when male gametes swim to an egg.... So the answer is [(E)]

Which of the following does not have an anterior and posterior end?
Options:
- (A) Adult mammals
- (B) Adult reptiles
- (C) Adult birds
- (D) Adult echinoderms
- (E) Earth orbiting the Sun
- (F) an erupting volcano
- (G) peachleaf willow
- (H) sensory neurons
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Let's think first: Adult echinoderms have radial symmetry. Animals with radial symmetry lack an anterior and posterior end. Adult echinoderms lack an anterior and posterior end.... So the answer is [(D)]