Exam 3: The Aquatic Environment

The area lying between the water lines of high and low tide is referred to as the ________.

The energy driving the global water cycle is provided by

Molecules spontaneously move from an area of higher concentration to an area of lower concentration in a process known as

The region of the vertical depth profile where the temperature declines most rapidly is called the ________.

Daily and seasonal fluctuations in temperature,salinity,and dissolved gases are most extreme in

A region of ________ occurs where deep waters of the ocean move upward to the surface.

Temperature fluctuates more in aquatic habitats than in terrestrial habitats.

The abundance of hydrogen ions in solution is a measure of ________.

The streamlined body shape of many aquatic organisms that swim helps reduce frictional resistance caused by water's high

During summer,the amount of oxygen in the water is greatest at the bottom of ponds and lakes.

The purest form of water containing the fewest solutes occurs in

As light enters water,the last wavelengths absorbed are

________ solutions are those that have a higher concentration of OH- (hydroxyl ions)than H+ ions.

A high pH indicates a very acidic solution.

Water takes longer than air to warm up or cool off because of water's high

Salinity within an estuary is greatest in

The place where freshwater streams and rivers meet the sea and mix with saltwater is called a(n)________.

As sunlight passes through water,only ________ wavelengths are able to penetrate into deeper water.

Individual atoms within water molecules are held together by covalent bonds.

The upper layer of warm,less dense water is referred to as the