4.) photosynthesis is often described as two series of reactions, the light dependent and the light-independent or calvin cycle reactions. describe all steps that occur in the light-dependent reactions, including raw materials, energy transfer, and products.

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

Identify the composition of oceanic and continental crystal rocks.in a model of earth’s interior,where would these rocks appear?

Which could be a pathway of food through an ecosystem