A related or common origin or property of an element in the chemical bond.
Homogeneous chromosoms pair up
Both the terms "living" and "biotic" describe an organism that holds life. However, an organisms stops "living" after it dies, but never stops being "biotic". This is because "biotic" means anything that has ever had life, whereas "living" only describes things currently alive.
What are the other answers?
I do not think it is A.
Is Simmering an option?
The desert and tundra are alike because they both have limited available water.