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

Q: What is the term for the exchange of genetic material between non-sister chromatids of homologous chromosomes? Choices: - inheritance - asexual reproduction - meiosis - crossing-over A:
crossing-over

Q: Q: Scientists ask questions, and then make detailed observations to try to ask more specific questions, in order to develop what? Choices: - Tests - suggests - theories - hypothesis A:
A: hypothesis

Question: Q: In a carbon triple bond, how many pairs of electrons are shared? Choices: - one - four - two - three A:
Answer: three

*Question*
Q: All the major landmasses moved together to form one supercontinent in which period? Choices: - Mesozoic - cambrian - Cenozoic - permian A:
**Answer**
permian

(Q).
Q: At what point is water on the ph scale? Choices: - 14, basic - 3, acidic - 0, very acidic - neutrality, 7 A:
(A).
neutrality, 7