input: OPTIONS:
- manipulated
- secreted
- acidic
- peptide Now, answer this question: Q: There are three basic types of hormones: lipid-derived, amino acid-derived, and what? A:
A:
output: peptide

input: OPTIONS:
- eardrum
- ear canal
- cochlea
- middle ear Now, answer this question: Q: Which part of the ear amplifies the sound waves? A:
A:
output: middle ear

input: OPTIONS:
- range
- mass
- space
- density Now, answer this question: Q: What term describes how closely packed the particles of matter are? A:
A:
output:
density