What are protists' methods for survival?

Question

What do they do/use to survive?

Answer 1

Protists are a wide group of single-celled organisms that can be like plants, like animals, or even have traits of both. They can secrete spikes, hard shells, and poisons. Some of them have flagella or cilia to get away. Some get nutrition from the light, others ingest dead matter or chemicals.

Here is a webpage that shows a lot of different kinds and gives you plenty of information:
http://www.ucmp.berkeley.edu/help/index/protista.html