A. cities would be correct
D. D. D. D. D. D. D. D. D. D. D D. D. D d. D. D. D. D. D. D
Barrier effects can assume physical or social forms.Physical barrier effects consist of characteristics of the natural (physical) environment that inhibit the spread of culture. The classic examples are oceans, deserts, mountain ranges, dense forests, and frigid climates.
<span>It results in the fish either dying or migrating to other parts of the ocean, which has a negative impact on the seabird populations and the fishing industry.</span>
