Linoleic acid: select one: a. has two double bonds, one between carbos 8 and 9, one between carbons 11 and 12 b. has shortened by 2 carbons, with a double bond bridging the original carbons 9 and 12 c. is an omega-3 fatty acid d. is labeled 18: 2(δ 9,12): e. all of the above.

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.

the most common type of reef is the fringing reef. this type of reef grows seaward directly from the shore. they form borders along the shoreline and surrounding islands.