Studied by 2 peoplenutrient cycles or biogeochemical cycles
nutrients, atoms, ions and molecules are continuously cycled from the nonliving environment to living organisms (biota) and then back
biomes
large regions characterized by distinct climate and specific lifeforms especially vegetation adapted to life there
law of conservation of matter
we may change various elements and compounds from one physical or chemical form to another but in no physical and chemical change can we create or destroy any of the atoms
the law of conservation of matter and energy
in any nuclear change the total amount of matter and energy involved remains the same
nuclear change
when nuclei of certain isotopes spontaneously change or are made to change into one or more different isotopes
nuclear medicine
using radioisotopes for diagnosis and treatment of various diseases
nuclear fission
nuclear change in which nuclei of certain isotopes with large mass numbers are split apart into lighter nuclei when struck by neutrons; each fission releases 2 or 3 more neutrons and energy
Low waste- society or Low throughput society
best long term solution to our environmental and re maximizing matter and energy flow (throughput) to a sustainable low waste society. Which is done by 1. reusing and recycling most nonrenewable matter resources 2. using potentially renewable resources no faster than they are replenished 3. using matter and energy resources efficiently 5. emphasizing pollution prevention and waste reduction and 6. controlling population growth
matter-recycling society
converts an unsustainable high-throughput society, the goal is to allow economic growth to continue without depleting matter resources or producing excessive pollution and environmental
high-waste/high-throughput societies
attempt to sustain ever-increasing economic growth by increasing the throughput of matter and enery resources in their economic systems
Note
Flashcard