chemistry
the 11th element of the periodic table
what is salt/Na
a battery is...?
what is a source of electric energy?
what is one member of a population
what is a chemical change?
this device lets you open and close a circuit
what is a switch?
a group of organisms that can mate and reproduce
what is a species?
name of chemical formula KCL
the term for L.E.D
what is a light emitting diode?
any living organisms that affect a population
what are biotic factors?
fuel from natural resources
what are bio-fuels?
measurement of power
what are watts?
measurement of the number of individuals living in a defined area
what is population density?
common name of magnesium sulfate
epsom salt
a device that converts chemical energy into electric energy.
wet battery
how plants grow and eat
what is photosynthesis