How do the life of our ancestors differ from the way of life of the 21st century

Which of the following cultures were among the earliest known inhabitants of north america? a) mayab) incac) anasazi d) olmec

6. how are goods and services distributed in a free market system?

Select the correct answer. after months of heavy rains, a farmer noticed a steady drop in crop production. upon testing the farmland, it was found the soil was severely lacking nutrients. which of the following explains the loss of nutrients from the soil? a. drought b. drainage basin c. leaching d. water shedding