Question: Q: When zinc metal is mixed with sulfur and heated, what is produced? A:
OPTIONS:
- extraction sulfide
- methane sulfide
- iron
- zinc sulfide
Answer: zinc sulfide

input with options: Q: A warm-air heating system uses what kind of energy to heat air? A:
OPTIONS:
- atmospheric
- nuclear
- cosmic
- thermal
output: thermal

Q: Q: What organ is divided into the duodenum, the jejunum, and the ileum? A:

OPTIONS:
- large intestine
- kidney
- lung
- small intestine

A: small intestine

input: OPTIONS:
- example strength
- Movement strength
- seawater strength
- acid strength Now, answer this question: Q: What decreases with the loss of subsequent protons? A:
A:
output: acid strength

Q: "crossing over" occurs during what phase of mitosis? A:

OPTIONS:
- Prophase ii
- prophase VI
- prophase iii
- prophase i

Answer: prophase i

Q: Q: What system consists of structures that produce eggs, secrete female sex hormones, and ultimately enable birth of a fetus? A:

OPTIONS:
- male reproductive system
- female uterus system
- female hormone system
- female reproductive system

A:
female reproductive system