Q: Cancer is caused by mutations, which can be caused by pathogens, chemicals, or what else? Choices: - evaporation - convection - diseases - radiation A:
radiation

Q: Glass, rubber, and plastics are examples of which type of solids? Choices: - dubious - aqueous - porous - amorphous A:
amorphous

Q: Q: Not all structural rearrangements of chromosomes produce nonviable, impaired, or infertile individuals. in rare instances, such a change can result in the evolution of what? Choices: - new order - new mutation - new family - new species A:
A: new species

Question: Q: How many valence electrons does nitrogen have? Choices: - 4 - 10 - 3 - 5 A:
Answer: 5

*Question*
Q: What is the term for a disturbance in matter that causes the transfer of energy from place to place? Choices: - nucleation - flooding wave - temperature wave - mechanical wave A:
**Answer**
mechanical wave

*Question*
Q: Are scissors simple or compound machines? Choices: - lever - neither - simple - compound A:
**Answer**
compound