Answer:
A gas-powered lawn mower is a complex machine because for it to function it does more than one motion. For example, it has a wheel and axle system so it can move when powered. And it has a system of simple machines and other parts that are put together to accomplish the task of cutting grass.
Explanation:
Answer:
the fertilizers contain nitrogen potassium and phosphorus . this makes the plants and algae grow faster
Explanation:
Fertilizers supply plants with the elements that may be missing or in short supply in a form that can be used by the plants for faster growth. Most fertilizers supply nitrogen, phosphorus and potassium
Answer:
the different colored liquids would've the manipulated while the amount of hummingbirds that visit is the responding variable.
Answer: False
Explanation: This is FALSE because the bats make a high frequency sound and we can't hear that type of sound.
