chemistry
the smallest unit of an element
what is an atom
matter in ecosystems does this
what is cycle
most of earth's water is found here
what are oceans
water stored underground in saturated zones
what is groundwater
this document declared independence from britain in 1776
what is the declaration of independence
this particle has no charge
what is a neutron
storage location of nutrients
what is a pool
water surrounds ions forming this
what is a hydration shell
the top of the saturated zone
what is the water table
this war was fought between the north and south between 1861-1865
what is the civil war
these electrons determine chemical behavior
what are valence electrons
largest phosphorus storage
what are rocks and sediments
water resists temperature change because of this property
what is high specific heat
rock layer that stores/transmits water
what is an aquifer
this amendment abolished slavery
what is the 13th amendment
this type of bond involves sharing electrons
what is a covalent bond
process converting N2 to NH3
what is nitrogen fixation
main driver of the water cycle
what is the sun
two factors controlling infiltration
what are porosity and permeability
this president issues the emancipation proclamation
who is abraham lincoln
energy required to remove an electron
what is ionization energy
conversion of nitrate to nitrogen gas
what is dentrification
largest water use in the US
what is thermoelectric power
when ground water is overused, coastal areas experience this
what is saltwater intrusion
this event in 1929 marked the beginning of the great depression
what is the stock market crash