Hydrophones scientists listen to and record sounds from the ocean. which statement best describes how ocean water affects sound waves?
a. cold water increases the speed of sound
b. warm water decreases the speed of sound.
c. low water pressure increases the speed of sound.
d. high water pressure increases the speed of sound.

Compare and contrast the adaptations of free-living flatworms and parasitic flatworms

Four different thermometers were used to measure the temperature of a sample of pure boiling water. the measurements are recorded in the table below. thermometer temperature reading 1 temperature reading 2 temperature reading 3 w 100.1°c 99.9°c 96.9°c x 100.4°c 102.3°c 101.4°c y 90.0°c 95.2°c 98.6°c z 90.8°c 90.6°c 90.7°c the actual boiling point of pure water is 100.0°c. what can be concluded from the data about the reliability and validity of the thermometers?

What is the most common structure of volcanoes?