Q: What's the term for the period during which women's ovaries stop producing eggs? Choices: - puberty - maturity - adolescence - menopause A:
menopause

Q: What are boggy regions with thick layers of peat called? Choices: - wetlands - tropics - meadows - peatlands A:
peatlands

Q: Q: What do we call the lowest layer of the atmosphere? Choices: - stratosphere - asthenosphere - mesosphere - troposphere A:
A: troposphere

Question: Q: Fluoride ion is widely used in water supplies to help prevent what? Choices: - rust - bacteria - chlorine taste - tooth decay A:
Answer: tooth decay

*Question*
Q: What types of living beings have water vascular systems and unique tube feet? Choices: - diatoms - mollusks - Ducks - echinoderms A:
**Answer**
echinoderms

Q: Q: The nature of what gives metals the properties of being ductile and malleable? Choices: - liquid bonds - magneticism - titanium bonds - metallic bonds A:
A: metallic bonds