*Question*
Q: Ash that enters the air naturally as a result of a volcano eruption is classified as what kind of pollutant? Choices: - thick pollutant - secondary pollutant - natural pollutant - primary pollutant A:
**Answer**
primary pollutant

*Question*
Q: Only finished mrnas are exported from the nucleus to what? Choices: - amino acids - cerebellum - electron - cytoplasm A:
**Answer**
cytoplasm

*Question*
Q: What provides the shape of a cell? Choices: - nucleus - cytoplasm - cellulose - cytoskeleton A:
**Answer**
cytoskeleton

*Question*
Q: The abundance of this substance in the atmosphere is what most scientist agree that is causing global warming? Choices: - argon - iron oxide - liquid dioxide - carbon dioxide A:
**Answer**
carbon dioxide