Q: What is the name of the science that studies matter and the changes material substances undergo? Choices: - geology - physics - biology - chemistry A:
chemistry

Q: Smog is one example of what type of pollution? Choices: - light - energy - sound - air A:
air

Q: Q: What is the term for the remains or traces of living organisms? Choices: - remains - ethings - deposits - fossils A:
A: fossils

Question: Q: Hurricanes that form in the tropics are called what? Choices: - rain cyclones - tornados - caribbean cyclones - tropical cyclones A:
Answer: tropical cyclones

*Question*
Q: All solutions contain at least how many substances? Choices: - one - four - three - two A:
**Answer**
two

(Q).
Q: "direct" and "alternating" are two kinds of what, which is associated with electricity? Choices: - time - constant - levels - current A:
(A).
current