is it okay to use only one source for a report?

i want to impress my Biology teacher so i wanted to make a paper on Oxygen and Evolution. Problem is i only need one source a youtube video. is this except able or pointless. or do you think its okay. yes im gonna cite my source to but do you think itll be just like coping or if you were a teacher would you be impressed or would you be just like okay thats cool? thanks for a respond and also don't comment on my writing im just in a rush i know this isnt acceptable

Update:

Carolyn: it isnt really mandatory any way so i don't know the instructions or whether my source is valid but im gonna throw in two more sources and this is really just to impress her not really for a grade

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