Problem:OPTIONS:
- anemia
- arthritis
- psoriasis
- osteoporosis

Q: What disease can too little calcium cause? A:
****
A: osteoporosis

Q: Viruses were assumed to exist before they were first seen with an electron microscope in which decade? A:
OPTIONS:
- 1960's
- 1890's
- 1940's
- 1930 ' s
1930 ' s

Q: What is the most useful quantity for counting particles? A:
OPTIONS:
- the coefficient
- the periodic table
- the vector
- the mole

Answer: the mole

Question: Q: Similar to the coil on a stove, changes in what reflect an increase in the temperature of a star? A:
OPTIONS:
- texture
- direction
- rotation
- color
Answer: color

input with options: Q: What term is used to describe the conditions in the sky on any particular day? A:
OPTIONS:
- forecast
- humidity
- temperature
- weather
output: weather

Problem: OPTIONS:
- their habitat
- predators
- competition and chaos
- the external environment
Q: Q: Cells must also be able to separate their relatively stable interior from what? A:
Answer:
the external environment