<span>The types of effects that the surgery had on the rats were documented with their bar-pressing behavior. The differences and changes from the injections effected the rats in certain ways. The location of the injection and which types that was more pleasurable for the rat is something that needs further investigation.</span>
Prokaryotic - cells that don’t contain a nucleus, for example bacteria cells
Eukaryotic - cells that contain a nucleus, for example plant and animal cells
The answer is the rock cycle
