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
