According to the text, what was the Mayan civilization

answer; ///(positive correlation);

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.

stable food supply,social structure, government,religion,culture/art,technology and writing/language;

answer; gender,race,age,/// (d) all of these;