Q: Q: Glaciers have been melting since what period? Choices: - industrial age - bronze age - stone age - pleistocene ice age A:
A: pleistocene ice age

Q: Q: What is the common term for the chemical formula h 2 0? Choices: - hydrogen - air - oxygen - water A:
A: water

Q: Q: What happens when forces of evolution work over a long period of time? Choices: - substantial evolution - Microevolution - developmental evolution - macroevolution A:
A: macroevolution

Q: Q: What two substances do plants give off when they make food? Choices: - water and oil - carbon dioxide and oxygen - chlorophyll and nitrogen - oxygen and water A:
A: oxygen and water