Read the text about leave-no-trace camping and fill in the gaps with the words from the list.

Leave-no-trace camping is an increasingly popular approach to travel in ... areas. As the term suggests, the goal is for the camper to live as little impact as possible on the place he is visiting. One of its mottos is ‘Take nothing but ... . Leave nothing but ... .’ Its simplest and most fundamental rule is: pack it in, pack it out, but it goes beyond that. If there are no established sites, take care in ... where to camp. Avoid ... your tent on ... plants that won't be able to ... from it. If you find a good site that looks like it's been used recently, don't use it; find another site and let this one recover a little longer. If you have to ... a fire, keep it in an existing fire ring or improvise a temporary one, use only small dead ... found lying on the ground, let them burn entirely, and scatter the cool ... when it's done.