The endosymbiotic theory states that chloroplasts and mitochondria evolved as a result
a. a prokaryotic cell engulfing a bacterial cell.
b. a eukaryotic cell engulfing a bacterial cell.
c. a bacterial cell engulfing a prokaryotic cell.
d. a bacterial cell engulfing a eukaryotic cell.

the correct answer is c   with the systems

science-ocean floors and habitats study guide by volleyballqueen3817 a major advance in ocean-floor mapping. list four sections of the ocean floor. algae that use sunlight to produce their own food through photosynthesis. all of the feeding relationships that exist in a habitat. drying out, predators, find food.