Exam 2 Intro to environmental

population growth has averaged 1.08% per year, while food production increased an average 2.2%.

True

Globally, over the last several years, protein intake has increased while calorie intake has decreased.

false

Most coutries with hunger greater than 35% of their population are located in Eastern Europe. 

False

It takes 3.0 kg of grain to produce 1.0 kg of beef.

false

Wind id the only force that causes soil erosion.

false

At best, about _________topsoil is accumalated annuallly 

1 mm

Under sever conditions, about ________ topsoil is lsot annually..

more than 25 mm

A soil with high content of ________ will have a very poor drainage.

clay

Ecological Diversity - measures richness and complexity of a community.

true

Ecological Diversity - measures number of different kinds of organisms within a community

false

Currently 25 million species have been identified 

false

Most of the known species are vertebrates. 

false

Forests cover 29% of the world land surface while grassland cover 15% of the land.

false

The largest tropical forest is located in Northern Europe

false

Onr quarter of world forest is managed for wood production.

false

World's fish sttock are healthy and can last for several hundred years. 

true

Repairing ecosystem function, but not to original condition (may be similar to the original community or an entirely different community is a function of

Option D

Rehabilitation

In ______, using chemical, physical, or biological methods to remove pollution while causing as little disruption as possible

remediation

In _________, employs stronger, more extreme techniques to clean up severe pollution or create a newly functioning ecosystem on a seriously degraded or barren site

Option C

reclamation

In ________,  compensation for destroying a site by purchasing or creating one of more or less equal ecological value somewhere else

mitigation

The most abundant element in the whole earth is iron.

true

The most common element in the earth's crust is

Oxygen

When continental plates and oceanic plates collide, ____________

the oceanic plate subducts under the continental plate.

 The most inner core of the Earth is

solid

Natural occurring ozone is located in _____________________ layer und in the and it is important because it absorbs ________ light and protects living organisms from radiation.

Stratosphere, UV

The phenomenon causing the greenhouse effect is that ________ in the lower atmosphere selectively absorb(s) reradiated ________ radiation.

Carbon dioxide, methane, and other gases; far-infrared (long wave)

_____ is the long-term patterns of temperature and precipitation.

Climate

Substances have the ability to reflect solar energy(Albedo). _____ has the greatest albedo.

Fresh snow