What ccurs when many muscles contract a little bit all at once?
Options:
- (A) heat production
- (B) heat loss
- (C) sweating
- (D) permineralization
- (E) hypothermia
- (F) resistance
- (G) cramping
- (H) heat energy
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Let's think first: Shivering occurs when many muscles contract a little bit all at once. Heat production is increased by shivering and non-shivering thermogenesis . Heat production occurs when many muscles contract a little bit all at once.... So the answer is [(A)]

What does population size influence on a species?
Options:
- (A) Quality of life
- (B) their migration pattern
- (C) their home
- (D) characteristics
- (E) Plant reproduction
- (F) their chance of living
- (G) their food preference
- (H) metabolic reaction
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Let's think first: Population size influences the chances of a species surviving. Survival is to live, to live means hope. Population size influences the chances of a species living.... So the answer is [(F)]

What happens in the archegonium?
Options:
- (A) eggs separate
- (B) Earth orbiting the Sun
- (C) sperm and egg fuse
- (D) competition
- (E) fallopian tubes join
- (F) permineralization
- (G) It expands
- (H) cloning
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Let's think first: Fertilization occurs when sperm swim to an egg inside an archegonium. Fertilization occurs when the egg and sperm fuse and join. An egg and sperm can fuse when sperm swim to an egg inside an archegonium.... So the answer is [(C)]

The sun contributes what to ecosystems?
Options:
- (A) sun spot
- (B) energy
- (C) darkness
- (D) seeds
- (E) positive
- (F) photons
- (G) Nutrients
- (H) Energy.
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Let's think first: Energy enters ecosystems in the form of sunlight or chemical compounds. If there is sun, there is sunlight, there is day. Energy enters ecosystems from the sun.... So the answer is [(B)]

What types of biomes are found in the pacific?
Options:
- (A) mediterranean
- (B) ferns
- (C) marine
- (D) canine
- (E) land
- (F) complex
- (G) protected
- (H) Conifers
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Let's think first: Marine biomes are found in the salt water of the ocean. Largest of the oceans on Earth is the Pacific Ocean . The Pacific has marine biomes.... So the answer is [(C)]

What water dweller can be stimulated with amphetamines?
Options:
- (A) pearls
- (B) algae
- (C) swea
- (D) otters
- (E) fish
- (F) humans
- (G) sharks
- (H) sponges
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Let's think first: Fish have a centralized nervous system with a brain. Amphetamines stimulate the central nervous system. Fish can be stimulated with amphetamines.... So the answer is [(E)]