Dr. greer believes that children are natural problem solvers and it is from that ability that language is learned. dr. greer would probably not agree that children have

LAD or as known The Language Acquisition Device is a speculative module of the human personality placed to represent kids' natural inclination for dialect learning. Noam Chomsky was the one who first presented the idea in the 1960s, the concept of Language Acquisition Device is an instinctual mental limit which empowers a newborn child to gain and create dialect.

first, the romans stayed isolated because they had to defend their own territories from neighboring cities that were harassing them, like the etruscans. second, once the romans managed to defeat their neighbors, and started to expand their territory, they started to build roads and bridges. finally, now that the romans have covered their territory with roads functioning as highways, they could mobilize their legions faster to assemble larger military units in a specific place.

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.