The correct answer is: 3. used math to improve the focus of the lens
Natural selection is the process of survival of the fittest. It involves adaptation, competition, reproduction, etc...
<span>B.) The earth's surface absorbs electromagnetic radiation from the sun and warms the earth. </span>
The answer would be Four.
Answer:
Two weeks
Explanation:
Recovery from a collapsed lung generally takes about one to two weeks. Most people can return to full activity upon clearance by the doctor.