Ques: Q: Burning trees produces most of the same pollutants as burning what? Choices: - fossil compounds - carbon - coal fuels - fossil fuels A:
Ans: fossil fuels

Ques: Q: What is the series of changes in the reproductive system of a mature female that happens monthly? Choices: - urinary cycle - fetal cycle - pregnancy - menstrual cycle A:
Ans: menstrual cycle

Ques: Q: Another way to classify matter is to describe it as a solid, a liquid, or a gas, which was done in the examples of solutions. these three descriptions, each implying that the matter has certain physical properties, represent the three of these? Choices: - phases of mass - types of atoms - forms of substances - phases of matter A:
Ans: phases of matter

Ques: Q: What elements do water and hydrogen peroxide consist of? Choices: - carbon and oxygen - calcium and oxygen - hydrogen and helium - hydrogen and oxygen A:
Ans:
hydrogen and oxygen