Supporting Detail- Their different journey will effect their shape and size, giving each snowflake its own unique identity.
Supporting Detail- The amount of moisture in the cloud determines the size of the ice crystal.
Supporting Detail- As each snowflake falls it drifts through clouds with different temperatures and moisture levels, which shapes each snowflake in a unique way.
Oldest because if older is older than the youngest it still may not be the oldest. There for the oldest would make the most sense. Because it is implying the oldest child. Not the middle child or anything in between
