(Question)
Q: What are formed when primary pollutants interact with sunlight, air, or each other? Choices: - cross pollutants - typical pollutants - secondary contaminants - secondary pollutants A:
(Answer)
secondary pollutants

(Question)
Q: Which is one of the most complicated parts of gene regulation in eukaryotic cells? Choices: - middle of transcription - aftermath of transcription - end of transcription - start of transcription A:
(Answer)
start of transcription

(Question)
Q: What body system gets rid of waste? Choices: - digestive system - Muscular system - nervous system - excretory system A:
(Answer)
excretory system