Why is it important to know the difference between science and pseudoscience?

Basically because science is actual facts and pseudoscience is based off opinion and not on scientific facts or research. 

This is what i found on google “phytoplankton, tiny organisms that live in the ocean, are autotrophs. some types of bacteria are autotrophs. most autotrophs use a process called photosynthesis to make their food.” i hope this you for what your looking for