Early american cultures were very vulnerable because they had nothing they knew of yet.
1.Adjust your day-to-day behaviors
2.Replace your light bulbs
3.Use smart power strips
4.Install a programmable thermostat
5.Use energy efficient appliances
6.Reduce water heating expenses
7.Install energy efficient windows
8.Upgrade your HVAC system
9.Weatherize your home
10.Insulate your home
Answer:
Having the best sex of your life
Explanation: