Q: What do tube worms rely on for food? Choices: - fatty microorganisms - lentiviruses microorganisms - sponges microorganisms - chemosynthetic microorganisms A:
chemosynthetic microorganisms

Q: Has the average annual temperature on earth been rising or falling for the past 100 years? Choices: - unchanged - fluctuating - falling - rising A:
rising

Q: Q: Each line in a structural formula represents a pair of shared what? Choices: - waves - ions - atoms - electrons A:
A: electrons

Question: Q: Panting allows dogs to get rid of what? Choices: - fur balls - accumulated toxins - calories - excess body heat A:
Answer: excess body heat

*Question*
Q: Magnetic resonance imaging devices use what to cool the superconducting magnets? Choices: - antifreeze - dry ice - fluorocarbons - liquid nitrogen A:
**Answer**
liquid nitrogen

Q: Q: How does a cell's membrane keep extracellular materials from mixing with it's internal components? Choices: - absorbs extracellular materials - repels extracellular materials - destroys extracellular materials - provides a barrier A:
A: provides a barrier