Chapters 1& 2 Flashcards
fracking
oil and gas extraction usin high pressure fluids
ecosystem
a location on earth with interacting components
enviornmentalism
social movement seeking to protect through lobbying and edu
ecosystem serivices
processes by which life supporting resources are produced
enviornmental indicators
describe current state of an ecosystem
biodiversity
diversity of life forms in an enviornment (genetic, species, ecosystem)
background extinction rate
avg rate at which species become extinct over time
ecosystem diversity
measure of diversity of habitats in a region
green house gases
gases that trap heat on earths surface
anthropagenic
derived from human activites
sustainable development
development that balances current human well being and economic advancement with resource management
biophilia
love of life
ecological footprint
measure of how much a person consumes expressed in an area of land
null hypothesis
a prediction that there is no difference between groups
accuracy
how close a measured value is to the true value
precision
how close to another the repeated values are
natural experiment
when a natural events allows for an experiment in an evosystem on a large scale
atomic number
number of protons
mass number
total of protons and electrons
surface tension
skin on water
acid
contributes hydrogen ions
base
contributes hydroxide ions
photons
packet of energy that carries electromagnetic radiation at speed of light
1st law of thermodynamics
energy cant be created or destroyed
2nd law of thermodynamics
quantity of energy remains the same but ability to do work is diminished
entropy
randomness in a system
open system
exchanges of energy across sustem boundaries
closed system
exchanges of energy do not occur across boundaries
negative loops
system responds to change by decreasing the rate at which the change is occuring
positive loops
change in system is amplified
