What DOES NOT get trapped by cilia and mucus?
A. pollen
B. carbon dioxide
C. smoke
D. large particles

Pls need ! in your opinion, what are the limiting factors that might affect the growth or diversity of our ecosystem? respond to this question in claim, evidence, reasoning format. 1. make your claim (i are the limiting factors that might affect the growth or diversity of our 2. follow the claim with 3 pieces of evidence. evidence may be taken from the reading, the videos, previous lessons, or googled answers. site sources, too. 3. use reasoning to explain why you chose your evidence.

Examine the following diagram. place the labeled layers in order from youngest to oldest.

How do light years astronomers to determine the ages of distant objects in space ?