To facilitate that exchange of oxygen and CO2 molecules.
Foliation forms when pressure squeezes the flat or elongate minerals within a rock so they become aligned. These rocks develop a platy or sheet-like structure that reflects the direction that pressure was applied in. Slate,schist, and gneiss (pronounced 'nice') are all foliated metamorphic rocks.~Google
Answer:
DNA is a template for base pairing.
Explanation:
A=T
C=G
The answer is: Molecule and Organ system. Hope this helps!