Because it is flexible. Think about it; the ribs protect both the lungs and the heart. If the ribs were solid bone all the way around then unless you constantly break your ribs you wouldn't be able to expand the cheat to breath. Additionally your lungs would constrict the heart to a degree that it would function properly.
Answer:
That microwaves use radiation to heat food
Explanation:
Question↓
Of the following examples, whose behavior is least likely to influence his or her self-esteem positively?
Answer↓
:Martina has a quote taped to her mirror that reminds her to be kind to herself and others.
Annalise volunteers at a local food bank once a week, which helps her forget about her problems for a little while as she serves others.
Joey has found a new group of friends to hang out with at school who are uplifting and fun to be around.
Hope this helps!!
