According to the endosymbiotic theory, the outer membrane of the chloroplast originated from which organelle? the lysosome of an engulfed prokaryotic cell
the chloroplast of a eukaryotic host cell
the cell membrane of a eukaryotic host cell
the chloroplast of an engulfed prokaryotic cell

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere