Problem: OPTIONS:
- concentrated mass
- baseline mass
- particular mass
- critical mass
Q: Q: What is the minimum mass capable of supporting sustained fission called? A:
Answer: critical mass

Problem:OPTIONS:
- fertilization
- spontaneous mutation
- mass extinction
- next generation

Q: Natural selection can only take place if there is variation, or differences, among individuals in a population. importantly, these differences must have some genetic basis; otherwise, the selection will not lead to change in this? A:
****
A: next generation

Q: Macrophages and dendritic cells are types of what" A:
OPTIONS:
- amoena cells
- supercapacitor cells
- mast cells
- phagocytic cells
phagocytic cells

Q: Carboxylic acids are weak acids, meaning they are not 100% ionized in what? A:
OPTIONS:
- air
- ethanol
- liquid
- water

Answer: water

Question: Q: The temperature at which the individual ions have enough kinetic energy to overcome the attractive forces that hold them in place is called? A:
OPTIONS:
- occurring point
- boiling point
- last point
- melting point
Answer: melting point

input: OPTIONS:
- epidermal tetrapod
- invertebrates
- exothermic
- endothermic tetrapod Now, answer this question: Q: What type of vertebrates are birds? A:
A:
output:
endothermic tetrapod