What other common relationships exist around you and are dependent on each other?

There are three different types of symbiotic relationships: mutualism, commensalism, and parasitism. Mutualism: both partners benefit. An example of mutualism is the relationship between the Egyptian plover and the crocodile

the answer is: metamorphic rocks often show the presence of fossils, also a

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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.