Because if there weren't any variation in a population, then there would be competition so more animals/ organisms would die.
Adaptation
2011 estimate1,191,264,000
8,858,000 people
Because on very, very rare occasions the variation may be helpful
Approximately 8 billion
worldwide it is 1.897 Billion
around 36 million
Roughly 9 million.
Russia's population is 140702000 in 2011
cellular cloning is the process of making a populaion of cells from a single cell. cellular cloning is the process of making a populaion of cells from a single cell. cellular cloning is the process of making a populaion of cells from a single cell.
The population of Chicago, as estimated in 2011, was 2,707,120.
the increase of populaion