Q: In plants, pigment molecules absorb only visible light for photosynthesis. the visible light seen by humans as white light actually exists in a what? Choices: - vacuum - transparency - invisible spectrum - rainbow of colors A:
rainbow of colors

Q: What bonds cause water to have a high boiling point, leaving most water on earth in a liquid state rather than in a gaseous state? Choices: - potassium bonds - carbon bonds - helium bonds - hydrogen bonds A:
hydrogen bonds

Q: Kelvin is a temperature measure in which the lowest temperature is what? Choices: - anomalous zero - accurate zero - definitive zero - absolute zero A:
absolute zero

Q: Evolution happens because of what? Choices: - natural resources - natural change - natural process - natural selection A:
natural selection