It’s overused I am pretty sure
The correct answer is :
A. you are expected to be familiar with everything contained in your college course syllabus.
Hope this helps,
Davinia.
Answer:
Plants and decoposers
Explanation:
Plants are vital organism because creates
photosynthesis to make sugar ( they can make
their own food ) and the start of the food chain.
Decomposers are vital organism since they break down dead plants and animals ( think as Earth's recyclers ).