Q: What is the time it takes for radioactive substance to decay? A:
OPTIONS:
- decay rate
- full-life
- deterioration rate
- half-life

Answer: half-life

Question: Q: What is the term for an infection caused by a fungal parasite? A:
OPTIONS:
- mydriasis
- mitosis
- acrobasis
- mycosis
Answer: mycosis

input with options: Q: At what age is skeletal maturity reached by humans? A:
OPTIONS:
- 40
- 30
- 15
- 20
output: 20

Q: Q: What do most organisms eat in the profundal zone of a lake? A:

OPTIONS:
- fresh organisms
- algae organism
- fish waste
- dead organisms

A: dead organisms

input: OPTIONS:
- fluid waves
- mechanical currents
- magnetic waves
- mechanical waves Now, answer this question: Q: What type of waves start when a source of energy causes a disturbance in the medium? A:
A:
output: mechanical waves

Question: Q: The migration of what familiar coastal landform involves saltation and gravity? A:
OPTIONS:
- volcanos
- lakes
- rivers
- sand dunes
Answer:
sand dunes