The slash-and-burn method requires:
a. an extensive land use system with a lengthy fallow period.
b. the use of purchased fertilizers to put nutrients back in the soil.
c. low biomass, so there is not much to interfere with planting.
d. the use of tractors or draft animals, minimizing the need for a labor force.
e. the use of domesticated animals for plowing.
Question 2
Cross-cultural comparisons made using collections of ethnographic data are ahistorical. This means that
a. the ethnographic descriptions of cultures are treated as timeless and unchanging.
b. the ethnographic information is not dated; there is no record of the years which it covers.
c. they only address nonliterate cultures.
d. their findings would likely not be published by a history journal.
reaction system of photosynthesis
Male Reproductive System
Disorders and Diseases of the Endocrine System
The Climate System
Embryonic Period
Fight-or-Flight System