LIFE SCIENCE

Detailed explanation-1: -New species arise through a process called speciation. In speciation, an ancestral species splits into two or more descendant species that are genetically different from one another and can no longer interbreed. Darwin envisioned speciation as a branching event.

Detailed explanation-2: -Cause of Speciation Divergent evolution occurs when a subgroup of a species evolves traits different from its ancestors. The trait usually sprung from selective pressures. Such pressures drive natural selection and compel organisms to evolve.

Detailed explanation-3: -This process in which one species gives rise to multiple species that exploit different niches is called adaptive radiation.

Detailed explanation-4: -The process by which different organisms having common ancestors develop different traits or characteristics to adapt to the changing environmental conditions and needs is known as divergent evolution. It is also known as adaptive radiation.

Detailed explanation-5: -In divergent evolution one population slowly accumulates genetic differences. Over time, the groups become so different that they are eventually considered different species that once shared a common ancestor. Divergent evolution is one mechanism of speciation, where new species form from one common ancestor.