Focuses on biological needs that produce unpleasant states of arousal.

the main thing i would use is bricks because if there is a hurricane, there is a great possibility for the house to still stand. and i would also use plexiglass windows instead of regular windows because plexiglass isn't prone to breaking.

answer; ///progressive relaxation;

lichens that colonize bare rock secrete acids that break down the rock and start the soil-production process. so they expose rocks