Q: The thick skin, found only on the palms of the hands and the soles of the feet, has an extra what? A:

OPTIONS:
- surface
- Skin
- outer
- layer

Answer: layer

Problem: OPTIONS:
- nitrogen
- feces
- blood
- urine
Q: Q: In contrast to mammals and birds, freshwater fishes produce large volumes of very dilute what? A:
Answer: urine

Problem:OPTIONS:
- insects
- eukaryotes
- vacuoles
- prokaryotes

Q: A biofilm is a colony of what that is stuck to a surface such as a rock or a host's tissues? A:
****
A: prokaryotes

Q: How do hydrogen bonds help ions and other polar molecules? A:
OPTIONS:
- solidify in water
- activate in water
- change in water
- dissolve in water
dissolve in water

Q: What are most fresh fruits, vegetables, whole grains rich in? A:
OPTIONS:
- calcium
- cholesterol
- magnesium
- cellulose

Answer: cellulose

input with options: Q: Natural resources that are limited in supply and cannot be replaced except over millions of years are known as what? A:
OPTIONS:
- precious
- biological
- renewable
- nonrenewable
output:
nonrenewable