Q: Another unit of energy, used widely in the health professions and everyday life, is _______? A:
OPTIONS:
- carbs
- body index
- biomass ( cal )
- calorie ( cal )
calorie ( cal )

Q: During diastole, what happens to the elastic walls of the arteries? A:
OPTIONS:
- they expand
- they become hardened
- they evolve
- they snap back

Answer: they snap back

Question: Q: What term describes the overall ability of an animal to survive and produce offspring? A:
OPTIONS:
- change
- evolution
- abilities
- fitness
Answer: fitness

input with options: Q: The average number of individuals per unit of area or volume is referred to as a population's what? A:
OPTIONS:
- increase
- diameter
- output
- density
output: density

Q: Q: What fills the epidermal cells that make up fingernails and toenails? A:

OPTIONS:
- cellulose
- chromatin
- amino acids
- keratin

A: keratin

Q: What makes echinoderms force water into the feet and move forward? A:
OPTIONS:
- spring contractions
- vacuum contractions
- field contractions
- muscle contractions
muscle contractions