Exam 3: The Aquatic Environment

The purest form of water containing the fewest solutes occurs in

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

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

As light enters water,the last wavelengths absorbed are

The solubility of oxygen ________ as water warms.

The individual atoms of a water molecule are held together by

Aquatic organisms generally require less structural support (e.g.,skeletons)due to water's high

Tides are strongest when the

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

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

Cold water contains more oxygen than warm water.

The movement of molecules from an area of high concentration to an area of low concentration is called ________.

In the open ocean,concentrations of oxygen reach a minimum value of 500-1000 m,a region referred to as the oxygen ________.

Small animals,such as water striders and water spiders,can run across a pond's surface due to ________.

The primary sources of oxygen in a water body are the atmosphere and

In lakes and ponds of temperate latitudes,the upper and bottom layers of water usually turn over as water warms up during spring.

A ________ tide occurs when the Moon and Sun are at right angles to the Earth.

________ is the source of frictional resistance to objects moving through water.

The turnover rate of water is longer in the ocean than in the atmosphere.

A solution with a pH of 3