input: OPTIONS:
- anal cavity
- eye cavity
- fluid cavity
- nasal cavity Now, answer this question: Q: Respiratory development in the embryo begins around week 4. ectodermal tissue from the anterior head region invaginates posteriorly to form olfactory pits, which fuse with endodermal tissue of the developing pharynx. an olfactory pit is one of a pair of structures that will enlarge to become this? A:
A:
output: nasal cavity

input: OPTIONS:
- Thermometric Energy
- ultraviolet energy
- atmospheric energy
- thermal energy Now, answer this question: Q: A boiler converts the chemical energy stored in fuel into what type of energy? A:
A:
output: thermal energy

input: OPTIONS:
- blood cells
- cartilage
- fiber
- tissue Now, answer this question: Q: Bones are made up of different types of what? A:
A:
output:
tissue