Which of the following is an example of mutualism?
a) a fish protecting a shrimp who builds a burrow for the pair to share
b) a peacock courting and mating with a peahen
c) crayfish and minnows resting under the same rock
d) two snake species with the similar markings advertising their toxic venom

A

Explanation:

The answer is a because mutualism is an interaction between 2 or more species where each species benefits.

A fish protecting a shrimp who builds a burrow for the pair to share

Explanation:

The fish is getting shelter from the shrimp who gets protection from the fish- they are both benefiting from the situation.

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.

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