Two or more atoms held together by covalent bonds. not necessarily a compound.
a. cellulose
b. molecule
c. glycogen
d. electron

Set comes up with for examples of sound waves ocean wave light wave and hand wave which of tonys examples is not an actual scientific wave

Which of the following is an abiotic factor in an ecosystem? a. bacteriab. airc. niched. grass(abiotic=non-living) me !

All of these things can block a bronchus and cause collapse of a lung except