Q: Before the atmosphere became oxygenated, the planet was subjected to what harmful energy source, meaning the first organisms would have flourished where they were more protected? Choices: - evaporation - conduction - convection - radiation A:
radiation

Q: Gas exchange during respiration occurs primarily through what? Choices: - vaporization - secretion - activation - diffusion A:
diffusion

Q: Q: What determines the strength of a base when dissolved in water? Choices: - amount of phosphorus ions produced - pH level - saline content - amount of hydroxide ions produced A:
A: amount of hydroxide ions produced

Question: Q: In general, kinetic energy is the form of energy powering any type of matter in motion, while the energy of position is called what? Choices: - mechanical energy - magnetic energy - thermal energy - potential energy A:
Answer: potential energy

*Question*
Q: What happens to the crust if the moving oceanic crust reaches a deep sea trench? Choices: - ocean volcano - it cleaves - forms a continent - sinks into mantle A:
**Answer**
sinks into mantle

Q: Q: How do fungus-like protists such as slime molds reproduce? Choices: - photosynthesis - sexually - asexually - with spores A:
A: with spores