You rush through a lot activity and get a percent error and 50% why might the percent error be so high

The percent error will be so high because you didn't take your time and review what you was doing. Usually, when you rush through something you don't do as good when you don't. That's why you should always take your time and not rush through a pre-test or a test. Take your time!

I hope this helps! :>

Interacting group of various species in a common location. for example, a forest of trees and undergrowth plants, inhabited by animals and rooted in soil containing bacteria and fungi, constitutes a biological community.