Problem:OPTIONS:
- entry point pollution
- point supply pollution
- point supply pollution
- point source pollution

Q: What is pollution that enters water at just one point called? A:
****
A: point source pollution

Q: Archaeans produce what kind of gas as a waste product? A:
OPTIONS:
- sulfide
- carbon monoxide
- carbon dioxide
- methane
methane

Q: What is the only class of animals that has hair? A:
OPTIONS:
- reptiles
- amphibians
- birds
- mammals

Answer: mammals

Question: Q: Duplicated chromosomes are composed of two sister what? A:
OPTIONS:
- karyotypes
- eukaryotes
- nucleotides
- chromatids
Answer: chromatids

input with options: Q: What is the only mechanism that consistently causes adaptive evolution? A:
OPTIONS:
- genetic drift
- neutral selection
- artificial selection
- natural selection
output: natural selection

Problem: OPTIONS:
- power reaction
- compounding reaction
- chemical reaction
- combination reaction
Q: Q: What kind of reaction is a reaction in which two or more substances combine to form a single new substance? A:
Answer:
combination reaction