Answer:
The answer is chlorophyll.
Which is a size-dependent property?
A. boiling point
B. conductivity
C. density
D.Mass
I think letter D
Why?
A size dependent property is a physical property that changes when the size of an object changes.Examples of size dependent properties: Length, Width, Height, Volume, Mass.

Bird flu is a relatively new disease. Hope this helps!
Answer:
The complement system is a <u>biological</u> barrier of the immune system.
Explanation:The answer is biological for edgeunity