Ancient human societies are described as labor intensive, and modern society is said to be energy intensive. what is meant by these terms?

Labor intensive means that  humans did the most of the work  during the production process ( they handcrafted each products and use slave labors to increase the production)

Energy intensive means that machines did most of the work during the production process. This process started to spread after the early development of industrial revolution.

u.s. presidents buried at arlington national cemetery include john f. kennedy and william howard taft. the kennedy gravesite is the final resting place not only of the former president, but also his wife jackie kennedy, his two brothers robert and edward kennedy, as well as a memorial to his brother joe jr.good luck

explanation:

i am pretty sure it is d.