Given a scientific question, generate a correct answer to it.

[EX Q]: Despite its small size, an erythrocyte contains about 250 million molecules of what?
[EX A]: hemoglobin

[EX Q]: Liquids that mix with each other in all proportions are said to be miscible, maning they have infinite mutual what?
[EX A]: solubility

[EX Q]: What is the term for the arrangement of veins in a leaf?
[EX A]:
venation pattern