Problem:OPTIONS:
- animals
- planets
- oceans
- continents

Q: The creation and destruction of oceanic crust is the reason what moves? A:
****
A: continents

Q: What is the ultimate source of energy for all life on earth? A:
OPTIONS:
- its core
- Mars
- the moon
- the sun
the sun

Q: What kinds of neutron stars emit radiation in pulses? A:
OPTIONS:
- quasars
- red giants
- dwarf stars
- pulsars

Answer: pulsars

Question: Q: Where does a baby travel to after leaving the uterus? A:
OPTIONS:
- tissue canal
- ear canal
- nasal canal
- birth canal
Answer: birth canal

input with options: Q: What is used to date older fossils? A:
OPTIONS:
- search engines
- litmus testing
- electron microscopes
- radioactive isotopes
output: radioactive isotopes

Problem: OPTIONS:
- cold
- temperature
- humidity
- heat
Q: Q: What is the exchange of energy from one part of the universe to another called? A:
Answer:
heat