Fact 1: Courtship is behavior that is intended to attract a mate. Fact 2: Reproduction A courtship usually preceeds the actual mating. Given the two facts above, answer the question "What precedes reproduction?" with the following options: - courtship - a sperm going into an egg - competition - Winter - parasites - embryo forming - fertilization - Summer
courtship

Fact 1: Plants are multicellular eukaryotes with cell walls made of cellulose. Fact 2: Flowers are plant organs of reproduction. Given the two facts above, answer the question "What are flower cell walls made of?" with the following options: - cellular - lmestone - cellulitis - strong - cellulose - cellulite - heat energy - acetic acid
cellulose

Q: Fact 1: The surface of a beach is formed by mechanical weathering. Fact 2: Water is a mechanical weathering force. Given the two facts above, answer the question "What is the surface of a beach formed by?" with the following options: - light - calcite - plates - a wave - water - Rocks - dust - fire
A: water

Question: Fact 1: Acar engine usually converts gasoline into motion and heat through combustion. Fact 2: Gasoline vapors are highly combustible. Given the two facts above, answer the question "Car engines convert highly combustible vapors into what?" with the following options: - Energy. - tires - passengers - motion - movement - heat - wheels - energy
Answer: motion

*Question*
Fact 1: Threatening behavior by predators causes a porcupine to extend its quills. Fact 2: Porcupines only inflate and extend their spines as a defense mechanism. Given the two facts above, answer the question "porcupine can use its quills as a what" with the following options: - encoded information - threatened - defense mechanism - cushion - protective bony armor - cleaning mechanism - if humans disturb bears - brush
**Answer**
defense mechanism

Fact 1: Astronauts require preserved food for extended flights. Fact 2: Almost of process food, canned food and preserved food are decreased in their nutritive value. Given the two facts above, answer the question "astronauts require what food for extended flights" with the following options: - Glucose - canned - squids - complete - sugar - hydration - earthworm - nutrients
canned