Davia and Annie love to play lawn tennis in the park after lunch. They sweat very hard and consume a lot of water to cool down. Their parents are always at their games, cheering them on. Identify FOUR activities/ situations from the scenario and state the characteristics of living things associated with each activity.

Dr. arenas is a scientist who has been trying to determine if increasing pressure will increase the sound that occurs when two chemicals explode. it measures the volume of the sound that occurs at the minimum pressure at which the explosion will occur. it then increases the pressure and measures the volume of the explosions that occur. what kind of investigation is the scientist conducting?