A duckbill platypus is a mammal that reproduces how?
Options:
- (A) asexually
- (B) during the day
- (C) by cloning
- (D) spread flower seeds
- (E) They have thick fur
- (F) by laying eggs
- (G) with their fur
- (H) swans
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Let's think first: Monotremes are mammals that reproduce by laying eggs. Monotremes include the duckbill platypus. Duckbill platypus are mammals that reproduce by laying eggs.... So the answer is [(F)]

Oncogenes promote the division of cells with damaged what?
Options:
- (A) Veins and arteries.
- (B) biological diversity
- (C) Something with a head, thorax, and abdomen
- (D) a hemisphere is tilted away from the sun
- (E) Addition
- (F) Person's genetic fingerprint
- (G) Mathematics division
- (H) Cell phones
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Let's think first: Oncogenes promote the division of cells with damaged DNA. DNA DNA DNA is a person's genetic fingerprint. Oncogenes promote the division of cells with damaged parts of a person's genetic fingerprint.... So the answer is [(F)]

What is an important deposit feeder that helps form and enrich soil?
Options:
- (A) A reptile
- (B) swamp vegetation
- (C) bacteria
- (D) A male
- (E) shrub beds
- (F) A hermaphrodite
- (G) An amphibian
- (H) peachleaf willow
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Let's think first: Earthworms are important deposit feeders that help form and enrich soil. Life Cycle Earthworms are hermaphrodites. A hermaphrodite is an important deposit feeder that helps form and enrich soil.... So the answer is [(F)]

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)]

Creatures with six legs may live in what?
Options:
- (A) space centers
- (B) ocean water
- (C) salt and water.
- (D) large colonies
- (E) small pendants
- (F) loose soil
- (G) distant moons
- (H) body water
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Let's think first: Insects may live in large colonies and have complex social behaviors. Insects have six legs. Creatures with six legs may live in large colonies.... So the answer is [(D)]

What is one thing studied in immunology?
Options:
- (A) illness
- (B) antigens
- (C) humanism
- (D) health
- (E) philosophy
- (F) resistance
- (G) symbology
- (H) fever
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Let's think first: Antigens are molecules that the immune system recognizes as foreign to the body. Immunology is the study of the immune system. Immunology includes the study of antigens.... So the answer is [(B)]