Q: What type of bond forms by unpaired electrons from two atoms "matching up"? Choices: - reactive bond - accretion bond - magnetic bond - covalent bond A:
covalent bond

Q: What are atoms called when they have the same number of negative electrons as positive protons in an electrical charge? Choices: - positive - static - negative - neutral A:
neutral

Q: Q: What is most of the water used in agriculture used for? Choices: - cleaning - construction - sowing - irrigation A:
A: irrigation

Question: Q: What do cells do in order to replace damaged or worn out cells? Choices: - replicate - die - fold - divide A:
Answer: divide

*Question*
Q: What is the term for a disease that is not contagious? Choices: - uncultured disease - common cold - benign - noninfectious disease A:
**Answer**
noninfectious disease

(Question)
Q: Bone marrow, the thymus gland, the spleen, and the tonsils are organs in what body system? Choices: - skeletal system - nervous system - reproductive system - immune system A:
(Answer)
immune system