Question 1
The process in which plants use light energy to synthesize food sugars from carbon dioxide is called ________.
◦ oxidation
◦ fusion
◦ hydration
◦ photosynthesis
◦ none of these
Question 2
Earth's primitive atmosphere evolved from gases ________.
◦ collected from the nebula
◦ escaping from water
◦ expelled from within the earth
◦ produced by radioactive decay
◦ from the Sun