which of the following life cycle stages do both complete and incomplete metamorphosis of insects have in common?
a. a female insect lays eggs.
b. the eggs hatch into nymphs.
c. larvae change into adults inside their protective cases.
d. larvae make hard, protective cases around themselves during the pupal stage.

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point