Each lung consists of millions of tiny air sacs called alveoli.
<span>Each air sac is surrounded by a tiny blood vessel called an </span>arteriole.
Speed would help the pilot know in what the rate he is going, making him able to navigate and move the plane or operate it
velocity ; helps pilot know their speed in the way they are going
can't drive a plane or etc without these ! (:
Answer:
true
Explanation:
A ravine is a landform that is narrower than a canyon and is often the product of <u>streambank erosion.</u>
