Exam 8: Aquatic Biodiversity

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

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

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

The zone in which you would expect to find deposit feeders along with oysters,clams,and sponges is 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 major cause of increasing ocean acidification?

Which of the following are the two greatest long-term threats to coral reefs?

____________________ lakes are typically shallow,have murky brown or green water,and have high nutrient levels.

Briefly explain why estuaries and coastal wetlands exhibit high productivity.

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

Since the 1950s,_____________ of the world's shallow coral reefs have been destroyed.

Net Primary Productivity is highest in ____.

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