What do you name the small changes within the species?

What do you call the changes in the frequency of genes in small populatons?

Evolution due to genetic changes within a species is

Evolution due to genetic changes within a species is

What do you understand by a chemical change ?

What do you understand by the isoelectronic species ? Name a species that will be isoelectronic with each of the following atoms or ions. F^(-)

What do you understand by the isoelectronic species ? Name a species that will be isoelectronic with each of the following atoms or ions. Ca^(2+)

What do you understand by the isoelectronic species ? Name a species that will be isoelectronic with each of the following atoms or ions. Rb^(+)

What do you understand by the isoelectronic species ? Name a species that will be isoelectronic with each of the following atoms or ions. Ar

What do you mean by small and fragmented landholdings?