if the Earth had 5% more oxygen in the atmosphere Global warming will happen.
Some abiotic factors that can limit a population are space and weather these are called limiting factors (and how much water is provided)
The answer is speciation by geographic isolation. When the population of a species gets separated due to reasons such as continental drift, mountains, canyons, etc. then each separated group of population may survive and adapt to their respective environment leading to speciation. These barriers do not allow the evolving populations to interbreed initially and over time when they evolve into different species they become completely reproductively isolated.
Caliceal
Pertaining to a calyx (cup-shaped collecting chamber in the central portion of the kidney).
