Marco places a toy car at the top of a ramp. He releases the car and measures how long it takes for the car to reach the bottom of the ramp. Then, he returns the car to the top of the ramp, releases the car again, and makes an additional measurement.
Coral Reefs are the underwater ecosystem whilst <span>Symbiosis is just what the concept entails. </span>
Answer:
the answer is 1 toxic metals can leak into drinking water
Explanation:
expecing brainliest