Under peter the great, russia fought sweden and gained access to the catherine the great further expanded russia by fighting the ottoman empire to gain access to the

Peter the Great, as he became known, led his country into major conflicts with Persia, the Ottoman Empire, and Sweden. Russian victories in these wars greatly expanded Peter's empire, and the defeat of Sweden won Russia direct access to the Baltic Sea, a lifelong obsession of the Russian leader.

d is the correct answer.

b is incorrect because it makes food by itself

c is incorrect because us humans don't know how to produce their own food using the sun like plants.

a is incorrect because consumers can depend on carnivores for eating food for consumers to eat the dead organism. same thing with omnivores.

fertile good for trade etc