Coastines on opposite continents appear to fit like puzzle pieces, indicating that they were once joined.
Answer:.......... The densest surface water masses in the oceans are the North Atlantic Deepwater and Antarctic Deepwater.
Answer:
Population.
Explanation:
U.S., India, and China, are the areas of heavy emissions of carbondioxide gas due to areas of dense population. These three countries have about half of the world population i. e. approx. 3 billions of people so vehicles and industries are high in number which releases the greenhouse gases such as carbondioxide and carbonmonoxide while heavy emissions of carbondioxide gas occurs from Germany because there is huge number of industries are there so that's why it is called the industrial heart of Europe.
China or India
but I personally believe it is India as it doesn't have a big land but loads of people
