Continents has shifted millions and million years ago
Because they have less resources to fight off disease and nothing to use for immunity. Sub Sahara Africa is also very poor
Answer: Muscular system because it is a complex body system, the others are organs in cells
This is an example of microevolution.
Microevolution represents a small change in the genetic structure of the population. These changes manifest through the change in the allele frequencies of genes like in the case of dung beetles.
The causes of microevolution are evolutionary mechanisms, natural selection, genetic drift, mutations and gene flow.
