Q: What part of the body do hookworms infest? Choices: - lungs - skin - brain - intestines A:
intestines

Q: What source of ocean pollution kills animals by coating them? Choices: - plants spill - grain spill - chemical spill - oil spill A:
oil spill

Q: Q: What cannot exist between energy levels? Choices: - crystals - protons - cells - electrons A:
A: electrons

Question: Q: Many important crops, such as corn, are planted and harvested as what? Choices: - trees - cuttings - berries - seeds A:
Answer: seeds

*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: Which process changes rocks by heat and pressure? Choices: - sediments - Changes - weathering - metamorphism A:
**Answer**
metamorphism