Take one square meter of soil and make it bare like this is down here, and I promise you, you will find it much colder at dawn and much hotter at midday than that same piece of ground if it's just covered with litter, plant litter.
Tag en kvadratmeter jord og gør den bar som den her, og jeg lover jer, at I vil finde den  meget koldere om morgenen og meget varmere ved middagstid, end det samme stykke jord, dækket med en smule affald, planteaffald.