Proper planning ensures that all your bases are covered.
This dualism, where the one constituent (alga) furnishes carbohydrates, and the other (fungus) ensures a supply of mineral matters, shade and moisture, has been termed symbiosis.
This ensures the luff cringle doesn't unhitch itself from the hook or line you have just put it on.
Making lists ensures that you get what you need in the timeliest way.
This method ensures a clean-butted unfractured rod, but unless great judgment is exercised in selecting the proper time for cutting, the rods will remain double-skinned and the head may bleed.