One example of a positive feedback loop in childbirth is contractions. When the contractions start, they produce oxytocin, which stimulates stronger contractions, which produce more oxytocin.
B the bird could fly into the fan
<span>It helps to break waste and nutrients down in the cell so that they can be moved through the various membranes and natural filters in the body.</span>
I'm thinking it is rain gauge
The genome of the different cell changes. In other words, the cell can turn on or off certain genes, or the gene expression.
