What is the behavior of attracting something that is phenotypically similar to the seeker called?
Options:
- (A) an object
- (B) stalking
- (C) jealousy
- (D) nonverbal communication
- (E) ducks
- (F) animals
- (G) orchids
- (H) courtship
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Let's think first: Courtship is behavior that is intended to attract a mate. Assortative mating is the mating of individuals that are phenotypically similar. Courtship is the behavior of attracting something that is phenotypically similar to the seeker.... So the answer is [(H)]

What is a positive effect of plant needs for water and minerals from soil?
Options:
- (A) erosion prevention
- (B) reducing acid rain
- (C) It helps them survive
- (D) agriculture
- (E) nutrient deficiency
- (F) water run-off
- (G) erosion
- (H) Exfoliation
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Let's think first: Most plants grow roots down into the soil to absorb water and minerals. Plant roots begin to stabilize the soil against erosion. The need for plants to absorb minerals and water from the soil also leads to them preventing soil erosion.... So the answer is [(A)]

What crawls and is known to have a complex nervous system?
Options:
- (A) fur seals
- (B) Insects.
- (C) mammals
- (D) animals
- (E) a fish
- (F) humans
- (G) bees
- (H) ducks
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Let's think first: Most invertebrates have a more complex nervous system. Insects are the most common invertebrates. Insects have a more complex nervous system.... So the answer is [(B)]