Problem:OPTIONS:
- isotopes
- matured isotope
- radionuclides
- radioisotopes

Q: What is an isotope that is radioactive called? A:
****
A: radioisotopes

Q: The thin scale-like or flat shape of what cells fits their primary function, to provide a smooth and protective surface? A:
OPTIONS:
- technique epithelium
- kind epithelium
- basic epithelium
- simple epithelium
simple epithelium

Q: The community of all of the living and nonliving parts of an environment is known as what? A:
OPTIONS:
- habitat
- population
- biodiversity
- ecosystem

Answer: ecosystem

Question: Q: The rate of dissolving is influenced by surface area, stirring, and what else? A:
OPTIONS:
- oxygen
- density
- gravity
- temperature
Answer: temperature

input with options: Q: List the three major types of blood vessels. A:
OPTIONS:
- vessels, tubes, veins
- veins, capillaries, vessels
- vessels, arteries, capillaries
- arteries,capillaries, veins
output: arteries,capillaries, veins

Problem: OPTIONS:
- five
- three
- One
- four
Q: Q: How many valence electrons can be found in a carbon atom? A:
Answer:
four