9. a county has recently evolved from underdeveloped to developed and the birth and death rate have stabilized. this is known as
a. zero population growth.
b. demographic transition
c. birth stabilization.
d. death stabilization.

The negative change found inside the plasma membrane is created by potassium ions sodium ions hydrogen ions chlorine ions

Agene pool: a) is the collection of all the alleles found in a single species b) is the collection of all the alleles found in a single population c) is the collection of all the chromosomes found in a single population d) is the collection of genes in a species that allow the individuals to swim

Nucleic acids offer variability because they contain alternate forms of genes called .