C. producer, the corn creates its own 'food' with photosynthesis. It's easier to remember as a flow chart producer(typically plants)->primary consumer(mostly herbivores)->secondary consumer(predators and other meat eaters) and decomposers(usually fungus) eat basically everything.
Endosymbiosis
that is my explanation hopefully its right
It has two phosppholipid layers that are either hydrophobic and hydrophillic the function is to protect thing from coming in and out
