Q: All combustion reactions are what type of reactions? Choices: - flammable - geothermal - reversible - exothermic A:
exothermic

Q: What type of vehicles is able to go to the deepest ocean floor? Choices: - off road vehicles - all-terrain vehicles - autonomous controlled airplanes - remote-control vehicles A:
remote-control vehicles

Q: Q: Why do sharks sense low levels of electricity? Choices: - to locate mates - to sleep - to reproduce - to locate prey A:
A: to locate prey

Question: Q: Why does water infiltrate the ground? Choices: - gravity - prolonged drought conditions - run-off from flooding - because soil and rocks are porous A:
Answer: because soil and rocks are porous

*Question*
Q: An environment in which cells neither sink nor swell is known as what? Choices: - pressured environment - electrolyte environment - exothermic environment - isotonic environment A:
**Answer**
isotonic environment

Q: Modern plants reflect what kind of changes that have occurred over many, many years? Choices: - unknown changes - tissue changes - tendency changes - evolutionary changes A:
evolutionary changes