Children aren't exact copies of their parents a. Populations evolve, individuals cannot. Selection acts on phenotypes, NOT genotypes 3. The result of modification is adaptation. E. through time 1.
Most evolution happens over spans of time that are hard to comprehend.
Genetically determined characteristics of organisms change with time. This change is directed by natural selection. Charles Darwin proposed natural selection as the mechanism of evolution. Biological richness of tropical forests 2. Oceanic islands 4.