input: OPTIONS:
- arthritis
- headache
- sunburn
- heartburn Now, answer this question: Answer the following question given this paragraph: Have you ever experienced heartburn? Heartburn is actually a condition caused by stomach acid, rather something in your heart. The stomach produces HCl, which is a necessary component of digestion. However, excessive amounts of stomach acid can cause a great deal of discomfort. Various factors can cause the overproduction of acid, mostly related to the types (and amounts) of food and beverages that are being consumed. Caffeine and other oils in coffee (even decaf) will increase HCl production in the stomach. Smoking cigarettes and drinking alcohol also increase the formation of stomach acid. Q: What is a common condition caused by stomach acid? A:
A:
output: heartburn

Answer the following question given this paragraph: Acids have a sour taste. Lemons, vinegar, and sour candies all contain acids. Q: What substances contained in lemons, vinegar, and sour candies have a sour taste? A:

OPTIONS:
- proteins
- fats
- lactose
- acids

Answer: acids

Problem: OPTIONS:
- carbons
- systems
- families
- organs
Q: Answer the following question given this paragraph: Plants are complex organisms with tissues organized into organs. Q: Plants are complex organisms with tissues organized into what? A:
Answer: organs

Problem:OPTIONS:
- carbon
- hydrogen
- nitrogen
- oxygen

Answer the following question given this paragraph: The products of photosynthesis are glucose and oxygen. Q: The products of photosynthesis are glucose and what else? A:
****
A: oxygen

Answer the following question given this paragraph: Sex chromosomes determine sex in animals and many plants. Other chromosomes are called autosomes. Sex-linked traits are controlled by genes on sex chromosomes. They may be inherited differently than autosomal traits. Q: What determines sex in animals? A:
OPTIONS:
- cell structure
- ribosomes
- cell density
- sex chromosomes
sex chromosomes

Answer the following question given this paragraph: Moving water has energy ( Figure above ). That energy is used to make electricity. Hydroelectric power , or hydropower, harnesses the energy of water moving down a stream. Hydropower is the most widely used form of renewable energy in the world. This abundant energy source provides almost one fifth of the world's electricity. The energy of waves and tides can also be used to produce water power. At this time, wave and tidal power are rare. Q: What is the most widely used form of renewable energy in the world? A:
OPTIONS:
- wind
- fossil fuel
- solar
- hydropower

Answer:
hydropower