Human Impact with video lesson

Human Impact 2014 Video

What are some reason for population growth? Population growth-Industrialization, agriculture, and medicine
Have humans reached their carrying capacity?


Energy needs and uses
How can energy sources be compared?
energy-facts

Cost 
Health
Political
Greenhouse/global warming.


What is Hydro-fracking

Hydraulic fracturing is the step in the process that involves injecting large amounts of water combined with fracking fluids and proppants (sand and other solids) down a wellbore. Fractures in the rock are created that allow the oil and gas to migrate up the well, where they can be captured.

What are some concepts and words associated with human impact?

climate

average weather in a region over many years

atmosphere

the mass of gases that surround Earth

greenhouse effect

the trapping of heat by certain gases in the atmosphere

greenhouse gases

the atmospheric gases that trap heat over the Earth's surface

global warming

the worldwide increase in average temperature

pollution

occurs when foreign substances become dissolved by air, water or soil

renewable resources

resources that are replaced as quickly as they are used

nonrenewable resources

resources that are used much faster than they are replaced

conservation

the preservation and careful management of the environment and of natural resources

recycling

process of reclaiming raw materials and reusing them to create new product

biodegradable

materials that can be broken down by bacteria and other decomposers

biogeochemical cycles

predictable pathways followed by chemical elements or molecules as they travel through living and nonliving parts of an ecosystem (water cycle, carbon-oxygen cycle, nitrogen cycle)

population

all organisms of a given species that live in the same place at the same time

limiting factor

an environmental factor that causes a population to decrease in size

biodiversity

the total number of different species on Earth, including those on land, in the water, and in the air

habitat

an environment that provides the specific things an organism needs in order to survive

fossil fuel

coal, oil or natural gas that forms over millions of years from the remains of ancient organism

ozone

a form of oxygen that has three oxygen atoms in each molecule instead of two; toxic to organisms where it forms near Earth's surface

smog

a combination of smoke and fog

acid rain

precipitation that is more acidic than normal and is caused by the release of sulfur dioxide and nitrogen oxide into the air

pesticide

a chemical that kills insects and other crop destroying organisms

fertilizer

a substance that provides nutrients to help crops grow better

sewage

the water and human wastes that are washed down sinks, toilets and showers

hazardous waste

includes those that are toxic, explosive, flammable, corrosive and radioactive

erosion

the process by which water, wind, or ice moves particles of rocks or soil

desertification

the advance of desert like conditions into areas that previously were fertile

drought

a period when less rain than normal falls in area

land reclamation

the process of restoring an area of land to a more productive state