is a type of reproduction in which the genetic materials from two different cells combine producing an offspring.

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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

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

Which feature of a human community is similar to a niche in a biological community