Mitochondria and chloroplasts, organelles inside of eukaryotic cells, have their own membranes and genetic material. this is evidence of a. abiogenesis. b. horizontal gene transfer. c. coevolution. d. the endosymbiotic theory.

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

Hemoglobin is a proton that carries oxygen around the body what is hemoglobin made from

About how many years does it take for one cycle of surface water to become deep water and then surface water again in the oceans? 101001,000