When is the Paleozoic Era.

answer; /// i believe that the correct answer is ; /// renaissance,printing press, age of exploration and protestant reformation;

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.