Q: What element chemically weathers rock by combining with a metal? Choices: - nitrogen - carbon - hydrogen - oxygen A:
oxygen

Q: An individual with down's syndrome has 47 of what instead of the normal 46? Choices: - ribosomes - mitochondria - prokaryotes - chromosomes A:
chromosomes

Q: Light bends when it passes in from what to what? Choices: - air to ground - product to water - water to air - air to water A:
air to water

Q: What two types of atoms bond to form sulfate minerals? Choices: - oxygen and carbon - oxygen and calcium - carbon and sulfur - oxygen and sulfur A:
oxygen and sulfur