Problem: OPTIONS:
- fertilizer
- erosion
- sediment
- runoff
Q: Q: What source of water pollution picks up chemicals from the ground with water and carries them to bodies of water? A:
Answer: runoff

Problem:OPTIONS:
- tissues
- Liquids
- rocks
- masses

Q: The sun's gravity is relatively strong because the force of gravity between two objects is directly proportional to their what? A:
****
A: masses

Q: Iron will do what when it is exposed to oxygen and water? A:
OPTIONS:
- become hot
- expand
- contract
- rust
rust

Q: What laboratory instrument is used to analyze and test for static charge? A:
OPTIONS:
- microscope
- bunsen burner
- microtome
- electroscope

Answer: electroscope

Question: Q: An example of beta decay is the emission of an electron by a carbon-14 what? A:
OPTIONS:
- molecules
- ion
- protons
- nucleus
Answer: nucleus

input: OPTIONS:
- carbolic acid
- compound acid
- catalyst
- amino acid Now, answer this question: Q: What do you call a compound that contains both an amino group and a carboxyl group in the same molecule? A:
A:
output:
amino acid