(question). 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
(answer). Monotremes are mammals that reproduce by laying eggs. Monotremes include the duckbill platypus. Duckbill platypus are mammals that reproduce by laying eggs.
The answer is (F)

(question). What is a major food source for other organisms, including humans?
Options:
- (A) gastropod shells
- (B) orchids
- (C) invertebrates
- (D) swamp vegetation
- (E) Most plants
- (F) insects
- (G) barnacles
- (H) animals
(answer). Mollusks are a major food source for other organisms, including humans. Mollusks are invertebrates and are no exception. Invertebrates are a major food source for other organisms, including humans.
The answer is (C)

(question). Temperature falls from the equator to
Options:
- (A) South Africa
- (B) Antarctica
- (C) Asia
- (D) our planet
- (E) Summer
- (F) during the day
- (G) South America
- (H) It decreases
(answer). Temperature falls from the equator to the poles. First, strong winds circling Antarctica isolate the atmosphere near the pole the winter. Temperature falls from the equator to Antarctica.
The answer is (B)

(question). What can be part of invading a host?
Options:
- (A) It helps them survive
- (B) Something that causes allergies
- (C) Movement of an air mass
- (D) energy of moving objects
- (E) vascular conncectivity
- (F) harmful substances
- (G) Leptospirosis
- (H) competing for resources
(answer).
Fungi have special structures for penetrating a host. Host tissue penetration occurs to the point of vascular connectivity. Fungi can invade a host to the point of vascular conncectivity.
The answer is (E)