Environmental Science Chapter 7 Test

¡Supera tus tareas y exámenes ahora con Quizwiz!

Which is not an environmental function of wetland

Increasing runoff

What causes most coastal pollution in the United States?

Industrial waste and sewage

In the ______ zone, the water is cool and dark.

Benthic zone

Which of the following is not a characteristic of salt marshes and mangrove swamps

Both are dominated by marsh grasses

The majority of marine organisms are found in..

Deep ocean waters

What adaptation prevents phytoplankton from sinking into deep waters?

Flagella

In the _____ zone, life is diverse and abundant

Littoral zone

Which of the following statements is false?

Rivers generally move faster and their oxygen levels decrease as they near the ocean

Which ecosystem has the highest level of salinity?

Salt marsh

An estuary functions as a mineral trap due to

The mixing action of river water and ocean water

Coral reefs are intricately shaped rock like structures that are formed as the result of

The secretion of calcium carbonate (limestone) by tiny marine animals

The arrangement of organisms in the open ocean is determined by the...

amount of nutrients and sunlight that are available

Estuaries...

are ecosystems where both fresh water and salt water are present

What are the two main types of freshwater wetlands?

marshes and swamps

The types of organisms found in a pond or lake depend on

the amount of sunlight available, the temperature of the water, the presence of nutrients

Which of the following is a threat to coral reefs?

Oil spills, sewage, and pesticides.

What mainly distinguishes nekton from benthos?

One swims freely and the other often lives attached to a hard surface.

Which organism produces most of the food in an aquatic ecosystem

Phytoplankton

Why doesn't photosynthesis occur in deep ocean water?

There is no sunlight

Which of the following is not a characteristic of wetlands

Wetlands are limited to inland freshwater environments.

As they flow down a mountain to flatter ground, rivers generally become...

Wider, warmer, and slower

Swamps are commonly found on...

flat, poorly drained land

Most pollutants that enter estuaries break down over time, yet they are still considered a problem because

it is the volume of the pollutants, more than the time factor, that harms estuaries

Two threats to ocean ecosystems are

nutrient runoff and industrial waste discharges, overfishing and entanglement of marine mammals in trawl nets, sewage and algal blooms

Estuaries are very productive ecosystems because they receive fresh nutrients from...

rivers and oceans


Conjuntos de estudio relacionados

Archaeology: Week 6- Paleoethnobotany

View Set

Pathology Ch-3 Cellular Reaction to Injury

View Set

POL 101: Chapter 4: Civil Liberties: Protecting Individual Rights: SmartBook

View Set

Macro Ch. 13 Money and the Banking System

View Set

Texas Life & Health Chapter 1/ Chapter 2

View Set