Earth's climate is always changing. For example, the climate of the Sahara has undergone enormous changes over time: from wet to dry over the past hundreds of thousands of years.
With respect to climate change caused by human activities, this is big problem in terms of forest decline or forest regeneration in semiarid areas. An aspect fundamental to understand this problematic is the scale: temporal scale and spatial scale... and the response of species >>> In my opinion, this is the main question..