Whats the Independent variable for “Which Bait works best for a homemade fly trap?”

The independent variable for "which bait works best for a homemade fly trap" if using the hypothesis of   "If I use the correct bait, then I will have a successful homemade fly trap" is the bait that you are going to use.

Explanation:

Using your "if, then" statement, the cause is called the independent variable and the effect is the dependent variable.

Hope this helps!

the reason the two sea urchins don't compete with each other for food, resources, etc. is because the urchins have adapted to the environment but they have also adapted to each other. this is most likely because the genes of the sea urchins.