Problem:OPTIONS:
- oxygen
- calcium
- ions
- ph

Q: Proper kidney function is essential for homeostasis of what level, which in turn helps ensure the functioning of enzymes? A:
****
A: ph

Q: What are two basic types of pollutants in the air? A:
OPTIONS:
- smog and coal
- organic and inorganic
- pesticides and smog
- primary and secondary pollutants
primary and secondary pollutants

Q: What is the most widely used form of renewable energy in the world? A:
OPTIONS:
- wind
- fossil fuel
- solar
- hydropower

Answer: hydropower

Question: Q: Nutrition and diet affect your metabolism. more energy is required to break down fats and proteins than this? A:
OPTIONS:
- vitamins
- electrolytes
- minerals
- carbohydrates
Answer: carbohydrates

input with options: Q: The marsupial embryo is nourished inside the uterus with food from a yolk sac instead of through a what? A:
OPTIONS:
- stomach
- ovum
- umbilical cord
- placenta
output: placenta

Problem: OPTIONS:
- nitric acid
- residual acid
- excessive acid
- lactic acid
Q: Q: During strenuous exercise our muscles perform what kind of fermentation? A:
Answer:
lactic acid