[Q]: Objective: How do I protect  from the rain  a camp  fire in a grill/fire ring combo?
[A]: Push the fire under the grate part with a shovel and wrap foil aluminium over the grill to protect the embers below.

[Q]: Objective: To put out a campfire,
[A]: pour water on it, separate the sticks slightly so it is not in a pile, and pour more water on it.

[Q]: Objective: To keep garden soil from growing weeds.
[A]: Mulch it.vMulch is a weed inhibitor (often its wood chips). This stops weeds growing as it stops light getting to any weeds. Mulch also has other uses as it helps retain moisture in the soil.

[Q]: Objective: To prevent burning cheese when cooking a dish with cheese on top,
[A]:
add the cheese five minutes before it finishes to prevent burning,