One fourth means (one half) of (one half) .
So the 18 months must be two half-lifes.
The half-life of this particular isotope is 9 months.
Answer:
Refined Vegetable and Seed Oils. Refined vegetable- and seed oils include corn, sunflower, safflower, soybean and cottonseed oils. ...
BPA. ...
Trans Fats. ...
Polycyclic Aromatic Hydrocarbons (PAHs) ...
Coumarin in Cassia Cinnamon. ...
Added Sugar. ...
Mercury in Fish.
Hello there :)
What I could say though are the following of the function of proteins:
Building Tissues and Muscles. Protein is necessary in building and repairing body tissues. ...
Hormone Production. ...
Enzymes. ...
Immune Function. ...
Energy.
A) a common ancestor
Homologous structures are structures that are similar in related organisms. There is a basic pattern of bones which can be inherited from a common ancestor