The more efficient a device is, the greater the percentage of usable energy it produces. If a device were to become less efficient, it would produce more or less usable energy?
less

The closer together the particles are, the greater the amplitude of the wave. A wave's amplitude will be higher or lower the farther its particles become?
lower

Q: A higher-frequency wave has more energy than a lower-frequency wave with the same amplitude. A wave with less energy than another will have a lower or higher-frequency?
A: lower

Question: For example, more people on the Earth means more people contributing to global warming and pollution. What will happen to the levels of pollution on Earth if the population increases they will rise or they will fall?
Answer: they will rise

*Question*
An increase in predators, the emergence of a new disease, or the loss of habitat are just three possible problems that will decrease a population. Compared to an island filled with tigers, would a similar island with no tigers be less likely to have an overwhelming deer population or more likely to have an overwhelming deer population??
**Answer**
more likely to have an overwhelming deer population?

*Question*
Better farming techniques and machines increased the food supply and the distribution of food. Jeff noticed the food supply changed over time in his city. The advent of farming machines likely caused the food supply to decrease or increase?
**Answer**
increase