Exam 8: Aquatic Biodiversity

Which of the following would be characteristic of the profundal zone?

Most of the wetlands that are lost are used for ____.

The distribution of many aquatic organisms is determined largely by salinity.

Coral bleaching occurs when algae, the food of the corals, die off because of stresses such as increased ocean temperatures.

On a fishing boat, someone catches a swordfish. As a biologist, you would consider this organism a type of ____.

The open, sunlit surface area away from the shore is in which zone?

In certain areas of the open sea, winds, ocean currents, and other factors cause water to come up from the depths to the surface, bringing nutrient from the ocean bottom. This process is called a(n)____.

Water in the floodplain zone usually has lower temperatures and more dissolved oxygen than that in the other zones.

Forty percent of the world's photosynthetic activity is conducted in the euphotic zone of the oceans.

Temperate-Zone Lake Life Zones Use the figure above to answer the following question(s). Choose the zone that is usually cold and barely penetrated by sunlight.

The ____________________ is the largest of the four oceans, and contains more than one-half of the earth's water.

In most shallow systems, such as lake edges, nutrients are often in short supply, limiting the net primary productivity (NPP).

Algal blooms can result in a cloudiness called ____________________, which can reduce the penetration of sunlight.

In 2012, ____ of the world's population lived along or near a coast.

Which of the following is classified as a freshwater aquatic life zone?

About 20 percent of all inland wetlands in Germany and France have been destroyed.

Precipitation that does not sink into the ground or evaporate becomes ____________________.

Fish adapted to cool, dark waters in lakes are found in the ____.

Some wetlands are covered with water all year; others remain under water or soggy for a short time each year and are called ____________________ wetlands.

Which of the following is a highly productive wetland that provides habitat for some 69 species of trees that can live in salty water?