The addition of feedback creates a closed-loop in the Universal Systems Model.
In population genetics, gene flow (also known as gene migration) is the transfer of alleles or genes from one population to another. Migration into or out of a population may be responsible for a marked change in allele frequencies (the proportion of members carrying a particular variant of a gene).
Ground wire and i believe it is yellow and green
decibels i believe is the correct answer. hope it helps :)
