Your answer is AB
People who have AB blood are considered "universal receivers" because they can take every single type of blood; their bodies can safety use A (because it already contains some A type blood), B (for the same reason), and O (because it is a neutral blood type).
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Answer:
Parasitism
Explanation:
The kind of relationship in which one organism benefits to the detriment of the other is called parasitism. The parasites feeds on the other organism and it derives nourishment and nutrient from it. The host or the other organism suffers and does not benefit from the relationship. This relationship can lead to the eventual death of the host organism. Example is tapeworm and man.
The answer is Sodium Fluoride
It's a system of chronological dating and geologists use it to describe the timing and relationships of events in Earth's history
The defecation reflex involves two postive feedback loops. these loops are the stretch receptors in the rectal walls and the sacral parasympathetic system. Defecation reflex empties the rectum by peristaltic movements push fecal matter from the sigmoid colon into the rectum. Then this distension of the rectal walls stimulates stretch receptors which results in defecation.
