3 goals of environmental science
learn how life has survived and thrived
how we interact with the enviroment
how we can live more sustainability
define pollution
contamination of the environment by a chemical or other agents such as noise or heat to a level that is harmful
list 3 out of 5 reasons why we have environmental problems
1. population growth
2. wasteful and unsustainable resource use
3. poverty
4. failure to include harmful environmental costs of goods
5. increasing isolation from nature
list the 4 main spherical systems
atmostphere
hydrosphere
geosphere
biosphere
----- is the dry weight of all living organisms that can can be supported at each trophic level in a food chain or web
biomass
Define a ecosystem
A set of organisms within a defined area of volume that interact with living and nonliving parts of environment
2 types of pollutants
point source
non point source
define affluence
we can obtain resources from almost anywhere in the world
describe a tropic level
the "feeding" level an organism
What part of earth holds the most biomass
Oceans
Main difference between environmental science and environmentalism
environmentalism is a social movement practiced in political arenas
give an example of a point source and nonpoint source
smokestack or drainpipe (point source)
pesticides or fertilizers (nonpoint source)
describe natural income and give example
natural income is renewable resource provided by natural capitol
pants, animas, soil, or clear air
list 3 out of 5 types of consumers
1.carnivore
2.omnivore
3.detritivore
4.herbivore
5.decomposer
list 3 of 5 nutrient cycles
1.phosphorus cycle
2. nitrogen cycle
3. sulfur cycle
4. hydrologic cycle
5. carbon cycle
3 types of natural resources
inexhaustible, renewable, nonrenewable
2 methods we have tried to deal with pollution and examples of each
make higher smokestacks (pollution clean up)
pollution control laws (pollution prevention)
name describe one environmental worldview
planetary management worldview- we are separate and in charge of nature and nature exists for our needs
stewardship worldview- we should mange the earth for our benefit and we have ethical responsibility to be responsible managers of the earth
environmental wisdom worldview- we are apart of and dependent on nature and life's support system exists for all species, not just us
name the type of consumer responsible for the fact that there is little waste in nature
and name the species that is the one exception to this natural process
Decomposers
Humans
describe the difference between GPP and NPP
GPP-rate at which an ecosystems producers convert solar energy into chemical energy in form of biomass
NPP-rate at which producers use photosynthesis to produce and store chemical energy minus the rate at which they use some of this stored chemical energy through aerobic respiration
give an example of each type of natural resource
sun or wind (inexhaustible)
air, water, plants, or animals (renewable)
oil or coal (nonrenewable)
define tragedy of the commons and give 2 solutions
tragedy of the commons is the degrading commonly shared renewable resources
1. use shared open-access renewable resources at a rate well below the estimated sustainable yield by using less, regulating access, laws and regulation
2.convert sheared renewable resources to private ownership
what country is carbon negative (hint: B----N)
Bhutan
give the chemical equation for aerobic respiration
C6H12O6+6O2 --> 6CO2+6H2O+Energy
(glucose+oxygen--> carbon dioxide+water+energy)
give the other name for earths nutrient cycles
(hint: B------------- Cycles )
biogeochemical