I think its because when your upside down, your not breathing right. So its a way of trying to breathe correctly.
the answer is the sympathetic nervous system i got that answer on my test
Answer:
Pregnant have many characters and when the embryo going to be develop her physical appearance like her weight will be increase . And in the pregnant women have high progesterone so she may have stomach cramps .
<span>Pokaryotes are single cell organisms. Anaerobic prokaryotes use oxygen to obtain energy.</span><span> They use oxygen to perform cellular respiration, so they perform anaerobic respiration.
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<span>Archaea
and eubacteria are prokaryotic in nature. One of the differentiating
characteristics between them is that eubacteria have peptidolycan in their cell
walls.</span>
