Curved rings of cartilage allow the trachea to stay open and bend.
I think it’s going to be c or a
Some agree its in the billions range somewhere close to 3 billion.
Answer:
Lithification is the process in which sediments compact under pressure, expel connate fluids, and gradually become solid rock
Explanation:
Summer means lots of out-of-doors time. Whether at beaches, barbeques, hanging out in the park or at the pool, most people catch more sun rays this season than other times of the year. In the process, some will get a suntan while others, unfortunately, will experience the painful redness, peeling and blistering that can occur with a bad sunburn.