Provide an example of one of the sub-categories of symbiotic or biotic relationships discussed in the unit. Explain the relationship and decide whether it is symbiotic or biotic. The unit has to do with water, tides and weather

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check for the pregnancy rating of drug. if its class c or d see if other alternatives

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.