What is similar between the function of the outer covering and skeleton? They each are found in invertebrates.
They each are used for protection.
They each are involved reproduction.
They each are used for movement.

Prior knowledge can be gained from personal experience and a) forming well-developed hypotheses. b) listening to opinions of other people on a topic. c) researching previous experiments and results on a topic. eliminate d) no other methods. it can only be gained by personal experience.