Given the size of apes and early humans, "downclimbing", considered trickier than climbing up, presented a significant physical challenge that their body structure would have responded through natural selection because of the risk of falls, the researchers said
Darwin thought that sexually selected traits could be explained by uneven sex ratios – when there are more males than females in a population, or vice versa.
With the coronavirus apocalypse looming ahead, people from every community are trying to understand the concept of "Survival of the fittest" given by Charles Darwin.
