Phytoplankton contribute positively in the oceanic ecosystem as they are a source of food for oceanic animals. Moreover, they remove carbondioxide from the carbon cycle and utilize it for the process of photosynthesis.
Answer:
An autotroph
Explanation:
An autotroph is a producer that makes their own food/energy
I think he would be smart in most things
Well I would say white blood cells, saliva, and skin are three types of defenses against the bacteria.