Q: Viruses were assumed to exist before they were first seen with an electron microscope in which decade? Choices: - 1960's - 1890's - 1940's - 1930 ' s A:
1930 ' s

Q: What do we call a device used to store electric charge? Choices: - charger - amplifier - battery - capacitor A:
capacitor

Q: Q: Compared with the molecules of many other substances, molecules of water are strongly attracted to what? Choices: - hydrogen - helium - nothing - each other A:
A: each other

Question: Q: Geysers erupt because what boiling hot substance is trapped beneath their surface? Choices: - gas - lava - oil - water A:
Answer: water

*Question*
Q: The two general functions of roots in plants are to anchor and to do what else? Choices: - generate - photosynthesis - grow - absorb A:
**Answer**
absorb

Q: Q: What are seeds plants that produce naked seeds in cones called? Choices: - cytoplasm - lipids - angiosperms - gymnosperms A:
A: gymnosperms