Calculate the distance to the ocean floor if a sonar signal takes 6 s to return to a ship's receiver

If it takes the sound 6 seconds to get to the floor and back, then it takes 3 seconds to reach the floor. So all you would need to do multiply (3 seconds) x (the speed of sound in water) = distance to sea floor. The internet can tell you the speed of sound in water, though just make sure you look for it in the units (feet or meters) that you want. I hope that helps.

2500.

Explanation:

All you would need to do multiply (3 seconds) x (the speed of sound in water) = distance to sea floor.

emerald ash borer

the emerald ash borer is a green buprestid or jewel beetle native to north-eastern asia that feeds on ash species. females lay eggs in bark crevices on ash trees, and larvae feed underneath the bark of ash trees to emerge as adults in one to two years. hope this !

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.