In this outdoor activity, learners search for the warmest and coolest, windiest and calmest, wettest and driest, and brightest and darkest spots in an area. They also look for differences between the plants and animals that live in the Hi-Lo spots. Learners explore the concepts of microclimates and environmental factors that change from season to season, day to day, and even hour to hour, causing plants and animals to make adjustments for survival.