Q: Q: The other ammonium ions are changed into nitrogen gas by what? Choices: - fluctuations bacteria - fungi - accompanying bacteria - denitrifying bacteria A:
A: denitrifying bacteria

Q: Q: The epidermis is made of which closely packed cells? Choices: - cancer cells - nerve cells - muscle cells - epithelial cells A:
A: epithelial cells

Q: Q: A catalytic converter filters pollutants in exhaust created by burning what before releasing it into the air? Choices: - carbon dioxide - noble gas - fossil compounds - fossil fuels A:
A: fossil fuels

Q: Q: What type of map shows the elevation and features in an area? Choices: - geographic - meteorological - gradient - topographic A:
A: topographic