The foundation for biological evolution or descent through modification is a) changes in gene frequency in a population occur from one generation to the next. b) mutation, migration, genetic drift, and natural selection cause biological evolution. c) all living things are made of one or more cells. d) organisms adapt to changes in their environment.

the truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey.

feral cats are estimated to eat tens of millions of native animals each night in australia

bacteria could be both, harmful and to us. harmful bacteria could make us sick and probably even by getting the chances of getting a disease, but good bacteria fight it off with your immune system. there is always bacteria everywhere we go. we need to make sure to wash our hands after using the restroom, before eating, after eating, after petting an animal too. so you see, bacteria is everywhere and is harmful or . i hope this . : ) : ) : )