Environmental Science 1 Exam 5

The ocean floor is quite different from the terrain on land

Over 70% of the earth's surface is covered by ocean

National parks are used for timber production

Clear cutting is the best way to extract timber resources because it is clean

Controlled burns help forests with production and fire safety

Resource management involves harvesting resources and maintaining their sustainability

Paper parks are protected on paper only

World Heritage sites are run by national entities

Shelterwood and seed tree cutting are less damaging than clear cutting

The practice of salvage logging is destructive

As people moved west in the US, the forests were diminished, but managed well over time mitigating their loss

The deep zone holds about 15% of the water in the oceans

Primary forests have never been cut

Estuaries contain both fresh and saltwater

Red tide is caused by algal blooms and is damaging because of the toxins released

Timber harvesting on private lands is much more conservative than on public lands

Plantation forestry doesn't provide soil services or habitats

The multiple use policy mostly focuses on people's connection with nature and adds a little timber harvesting in.

Intertidal zones are only considered marine ecosystems when the tides are high

People were afraid of a timber famine, which is when droughts cause forests to die off

Humans can inadvertently introduce invasive species by moving from one body of water to another

The pelagic zone is the fishy swimmy area

Plantation forestry creates new forest habitats and is a solution for deforestation

The pycnocline has a stable density and is not affected by atmospheric changes

The benefits of a kelp forest include the absorption of wave energy

The National Forestry Management Act of 1976 Mandated plans for renewable resource management

The roadless rule protects all forests from road development

Mangroves are found in tropical climates and provide fish and bird habitats

phytoplankton are the base of the marine food chain

A land trust is when the government takes control of land and puts it into a trust

The surface layer of the ocean is warmed by sunlight and hosts primary productivity

Intertidal areas vary in temp and salinity greatly

The ocean contains dissolved salt ions

Salt marshes have high primary productivity in temperate areas with sandy soils

Oceans influence the atmosphere but not climate

Mangrove roots are groovy

Oceans are almost 98% water

Only pregnant women and children are at risk of mercury poisoning

Fishing population is expected to collapse in 2048

Industrial fishing has caused the exploitation of 50% of the fish populations

Major oil spills are the primary cause of oil pollution in the oceans

People have always been smart enough to keep sewage out of the ocean

The US forest system was created in response to the desire for people to commune with nature

Kelp is brown algae

Coral reefs provide little value to shorelines

The wise use movement is encouraged by environmentalists

Parks and reserves were created for preservation and restoration