Q: In a fuel cell, energy is not stored; electrical energy is provided by what? A:

OPTIONS:
- fusion reaction
- carbon reaction
- consumption reaction
- chemical reaction

Answer: chemical reaction

Problem: OPTIONS:
- the skin
- the liver
- the lungs
- the brain
Q: Q: Meningitis, for example, is caused by a viral or bacterial infection of the tissues covering what? A:
Answer: the brain

Problem:OPTIONS:
- heat
- evaporation
- filtration
- corrosion

Q: Paint keeps oxygen and water from coming into direct contact with the metal, which prevents what? A:
****
A: corrosion

Q: The extent to which a substance may be dissolved in water or another solvent is known as what? A:
OPTIONS:
- humidity
- flexibility
- turbidity
- solubility
solubility

Q: The gender of a baby is determined by what special pair of chromosomes? A:
OPTIONS:
- diploid chromosomes
- sister chromatids
- reflection chromosomes
- sex chromosomes

Answer: sex chromosomes

input with options: Q: What is the measure of change in velocity of a moving object? A:
OPTIONS:
- transmission
- vibration
- kinetic energy
- acceleration
output:
acceleration