Have you ever wondered what it really means for your aquarium to be "cycled"? This is referring to natures Nitrogen Cycle. Here is a quick break down for a better understanding: The Nitrogen Cycle is natures way of purifying itself. It is the process in which nature creates beneficial...

The week before I start my cycle, I get the feeling of floating/dizziness along with the usual cramps, and sore boobs. I feel like this through my cycle also. I have bad dreams and anxiety. I have been diagnosed with anxiety but do not take meds for it because they make me gain weight. BUT today, I...

Can someone explain to me the difference between these? I am trying to write a lab report and have no idea what I'm writing about.