Answer:
lichen
Explanation:
Common examples of pioneer species include bacteria, lichen, mosses, and fungi.
Answer:
Wheezing happens when the airways are tightened, blocked, or inflamed, making a person's breathing sound like whistling or squeaking. Common causes include a cold, asthma, allergies, or more serious conditions, such as chronic obstructive pulmonary disease (COPD).
Explanation:
5.09 x 10 to the 6th power
D. it serves as a link between membrane proteins on adjacent membranes.
