1. Why was research about evolution so difficult?

The lungs are a. divided into seven lobes b.divided into nine lobes c.separated by the mediastinum d. connected by the mediastinum

Which of these is the muscular tube that leads from the mouth to the stomach? a.epiglottisb.uvulac.soft palated.esophagus

What is the result of procrastination? a.having less time to work on tasks b.being able to plan your tasks more effectively c.having more energy to work on tasks d.getting tasks done promptly