In 2006, a controversial decision was made by the international astronomical union regarding one of the planets. what was it?

It was the removal of Pluto as a planet. 

Hey, Madbam06p00f6z!

This was the removal of Pluto being a planet, and instead became a dwarf planet. 

Hope this helps! :) ~Lily

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