Tim,
You'll have quite a challenge doing a meaningful presentation on all of those topics in one hour! Ask one of the troop leaders the distribution of ages & ranks in your audience. That may help to determine how detailed or general to make the treatment. If you're not already a scout leader, you may find it helpful to access the troop's library or nearby scout shop to get a copy of the handbook, & posssibly even a merit badge booklet on Wilderness Survival. Those will also help you decide the level of detail. You may also want to determine why you were the one invited to cover those areas. The topics are broad. You may find you do not need actually to cover all of that ground in one hour. Also determine if the "hour" is really about 3/4 of 1 hour or 1 1/2 hours. Meetings vary in length. Be sure to practice the presentation to debug it. What seems like a really great 1-hour presentation would probably not go over well if really requires 2-3 hours to deliver. Keep in mind how limited the kids' span of attention will tend to be. Also, many of the kids may not be as interested in the topics as we might wish. Be sure to work in audience participation. Visual aids, models, and samples are helpful.
Incidentally if it is any consolation, you should have to do the talk on US Constitutional rights & obligations in 30 minutes. That's typically what I get. Oh, well, hopefully some of it sticks.
Good luck,
John