What is a producer in terrestrial biomes?
Options:
- (A) food
- (B) Oak
- (C) mammals
- (D) flowers
- (E) earth
- (F) grass
- (G) Trees
- (H) mushrooms
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Let's think first: Plants are the major producers in terrestrial biomes. Grasses are very distinctive plants. Grass is a producer in terrestrial biomes.... So the answer is [(F)]

What is more complex in eukaryotes than in prokaryotes?
Options:
- (A) plants
- (B) cell immigration
- (C) cell establishment
- (D) pollen
- (E) explosions
- (F) mitosis
- (G) A computer
- (H) orchids
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Let's think first: Cell division is more complex in eukaryotes than prokaryotes. Asexual cell division is called Mitosis. Mitosis is more complex in eukaryotes than prokaryotes.... So the answer is [(F)]

What have humans collected and grown as food for thousands of years?
Options:
- (A) sunlight
- (B) fungi
- (C) plants
- (D) rocks
- (E) fungus
- (F) salmon
- (G) ferns
- (H) poison
--
Let's think first: Humans have collected and grown mushrooms for food for thousands of years. Mushrooms are also fungi. Humans have collected and grown fungi for food for thousands of years.... So the answer is [(B)]

What systems are pollutants bad for?
Options:
- (A) destroying life
- (B) classification system
- (C) an organism's body
- (D) respiratory and circulatory
- (E) animal habitats
- (F) ambulatory systems
- (G) social security system
- (H) the environment
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Let's think first: Air pollution harms the respiratory and circulatory systems. Air pollution is caused by lots of different pollutants. Several different pollutants harm the respiratory and circulatory systems.... So the answer is [(D)]

Neurotransmitters and hormones are what in their function?
Options:
- (A) cells
- (B) organic
- (C) inorganic
- (D) complex
- (E) Vibrates
- (F) warm
- (G) properties
- (H) similar
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Let's think first: Hormones are chemical messengers that control many body functions. Neurotransmitters are chemical messengers in the brain. Hormones and neurotransmitters behave in common ways.... So the answer is [(H)]

Hostility can be one outcome of:
Options:
- (A) relocation
- (B) behavior research
- (C) decrease stamina
- (D) forces
- (E) fungi
- (F) competition
- (G) tolerance
- (H) Gunshots
--
Let's think first: Competition may lead to aggressive behaviors or displays of aggression. Frequently their behavior is aggressively hostile. Competition may lead to hostility.... So the answer is [(F)]