Answer:
D. Oral cavity to the trachea to the larynx to the right and left main bronchi.
Explanation:
The Glossopteridales occur on the most landmasses
It would affect our environment very badly. The following reasons are why it is bad: 1)Trees are our main supply of oxygen. 2) Corn is slow at converting carbon dioxide into oxygen. 3) Many wildlife creatures (plants and animals) need that ecosystem to live.