If courtship precedes reproduction, then what precedes reproduction? Answer choices: - courtship - a sperm going into an egg - competition - Winter - parasites - embryo forming - fertilization - Summer
courtship

If flowers are multicellular eukaryotes with cell walls made cellulose, then what are flower cell walls made of? Answer choices: - cellular - lmestone - cellulitis - strong - cellulose - cellulite - heat energy - acetic acid
cellulose

Q: If the surface of a beach is formed by water, then what is the surface of a beach formed by? Answer choices: - light - calcite - plates - a wave - water - Rocks - dust - fire
A: water

Question: If car engines convert highly combustible vapors into motion, then car engines convert highly combustible vapors into what? Answer choices: - Energy. - tires - passengers - motion - movement - heat - wheels - energy
Answer: motion

*Question*
If porcupine can use its quills as a defense mechanism, then porcupine can use its quills as a what? Answer choices: - encoded information - threatened - defense mechanism - cushion - protective bony armor - cleaning mechanism - if humans disturb bears - brush
**Answer**
defense mechanism

If astronauts require canned food for extended flights, then astronauts require what food for extended flights? Answer choices: - Glucose - canned - squids - complete - sugar - hydration - earthworm - nutrients
canned