individual pros of being bigger
lose less heat
less likely to be eaten
better able to move around
find more food as result ^
general pro of being larger
survive in wider range of environments
smallest unit of element that still maintains property of element
atom
atoms combined
can have completely dif properties than atoms they contain
molecule
smallest functional unit of life
cell
groups of cells w similar functions
tissue
two or more types of tissues working together to complete specific task
organ
group of organs carrying out generalized set of functions
organ system level
organ systems that function together
organismal
equilibrium
when molecules distributed equally in area