Answer: Modern oceanography is a combination of several fields of science, and it is conventionally divided into the subdisciplines of physical, chemical, biological, and geological oceanography. Closely associated fields are those of marine technology, maritime law, and studies of the effects of ocean pollution.
Explanation:
From small beginnings, South America grew to greatness because of maize. Just did this and it's correct.
Thae answer is all of the above because magma can be created when hit, liquid rock intrudes into earth’s cold crust. As the liquid rock solidifies, it loses its heat to the surrounding crust. Much like hot fudge being poured over cold ice cream, this transfer of heat is able to melt the surrounding rock (the “ice cream”) into magma.
Longer life expectancy, along with a low fertility rate, has resulted in a rise in the country's elderly population. As a result, the workforce in the city state is quickly diminishing, putting economic strain on the region. Singapore's workforce is increasingly aging. Employees over the age of 50 will be the fastest increasing group between 2016 and 2030, with their numbers expected to climb by 55 percent, accounting for 40 percent of the workforce.
Answer:
B. The average number in a certain area
Explanation:
Population density is calculated by taking the total area of a region in question and dividing it by the total number of people that live in that area. The result will give the average number of inhabitants per square kilometre, mile, acre, meter, etc. While the population density of an entire country is not a very accurate means of knowing the population density of that countries capital city, it does given an idea of how much land is available in the country per inhabitant.