Why do we need protists?

Protists:

1. Protists are unicellular eukaryotic organisms that are usually microscopic in size.
2. They contain a nucleus and membrane-bound organelles.
3. They reproduce mainly in asexual modes and sexual reproduction is rare.
4. They are a crucial part of the food chain and are primary food sources for animals.
5. They are involved in biofuel production and produce oxygen via photosynthesis.
6. They are involved in the decomposition process and recycle nutrients.