Answer:
Explanation: First off, people with CO often receive supportive care to relieve symptoms. The FDA has approved of some other tactics such as a medical D to treat CO patients. Secondly, the equipment used on people with CO is often a mask and a respirator. Hope this helps.
Basically, what you want to know is : how similar are the Species?
If you look at Species A and B - all of their enzymes are different! so they're not very similar.
Species A and C have all the same enzymes, so A and C are related and B is less related to them. Tree 2 is the correct tree.
a stone set up beside a road to mark the distance in miles to a particular place
<u><em>yeah this is big brain time</em></u>