Principle #1 Genetic Variation : Lions are usually found in India's Gir Forest and in Central and Southern Africa. One type of lion is the Asiatic lion. These lions live in India and tend to be much smaller than African lions.
Principle #2 Overproduction & the Struggle for Existence : Lions face many struggles with climate changes, diseases that certain insects carry on them, and the loss of habitats by overproduction. They do not have a certain breeding season but they usually breed depending on the patterns of the weather and how much food is left.
Principle #2 Differential Survival & Reproduction : Lions have been able to adapt to their habitat by using their tan skin to camouflage into the savanna. Since they usually hunt animals with hooves, they have been able to develop loose skin on their stomachs to prevent panic-struck kicks. With lions, males with the largest manes (depending on the habitat) are able to mate with more females and produce more offspring by their attractiveness.
Principle #3 Changes in the Gene Pool : Due to many losing their habitat, the number of African lions is decreasing. While the wild number is decreasing, the ones in captivity are increasing. Almost 1,000 lions are killed a year in order to make profit in lion bone trading.