How can Australians population increase? Why is South Koreas population larger than Australia’s when South Koreans land mass is much smaller?

Australia = Growth in Australia's population is made up of two components: natural increase—births minus deaths and. net overseas migration (NOM)—the net gain or loss of population through immigration to Australia and emigration from Australia.

sorry but I don't know the second one

answer; broad features of society;

answer; the digital divide;