flow of energy

what type of system is earth regarding energy and matter

e-open m-closed

what flux

rate of energy movement

what are the compartments

atmosphere, ocean, land, freshwater-river, lake, pond

where is most of the mass of the atmosphere, why

troposphere, water and air circulation

why is the ozone layer important

absorbs uv so protects organisms

how does most material end up in the ocean

river runoff, gas exchange, minerals settle, winds make water rise

whats the global conveyor belt

ice forms, water sinks, ice melts, lower warm water rises current

describe the distribution of nutrients and oxygen in freshwater

surface- nutrient poor, oxygen rich deep-nutrient rich, oxygen poor

how does lake turnover work

ice melts, cold water more dense, sinks, nutrients brought up

what has the highest NPP

coral reefs/algae beds, tropical wet forest

how can rivers return water to oceans even though they have a small volume

water moves fast in them