input with options: Q: A voltage source and a conductor are common to all what? A:
OPTIONS:
- magnets
- thermometers
- cooling circuits
- electric circuits
output: electric circuits

Q: Q: Sebaceous glands produce an oily substance called what? A:

OPTIONS:
- ear wax
- pus
- synovial fluid
- sebum

A: sebum

input: OPTIONS:
- electromagnetic energy
- harmonic energy
- binary energy
- kinetic energy Now, answer this question: Q: What do we call the energy of motion? A:
A:
output: kinetic energy

Q: Food is chemical energy stored in what? A:

OPTIONS:
- typical molecules
- oxygen molecules
- DNA molecules
- organic molecules

Answer: organic molecules

Problem: OPTIONS:
- birds
- mammals
- reptiles
- amphibians
Q: Q: What were the first animals to have true lungs and limbs for life on land? A:
Answer: amphibians

Q: What phenomenon is essential in order for evolution to occur because it increases genetic variation and the potential for individuals to differ? A:

OPTIONS:
- radiation
- replication
- natural selection
- mutation

Answer:
mutation