The importance of plants like domesticated sumpweed, chenopods, may grass, and amaranth in prehistoric diets was largely unknown in North American diets of the eastern woodlands at least 4000 years ago until which of the following techniques was used?
a. total station mapping of in situ artifacts
b. the stratigraphic method
c. excavation by natural rather than arbitrary levels
d. flotation
e. precision excavation
Question 2
The process of flotation is based on the principle that
a. the most appropriate screen size for recovering carbonized plant remains and bone fragments is 1/4 mesh.
b. carbonized plant remains and very small bone fragments will float when submerged in water, while heavier items (including dirt) will not.
c. artifact provenience is the most important information an archaeologist can record during an excavation.
d. burned plant remains cannot be separated from archaeologically recovered dirt.
e. it is expensive and a time-consuming process.
Plastid composition of egg cells from green, white, and variegated four-o'clock plants.
Changing leaf area: (a) following rainfall ocotillo plants of the Sonoran Desert develop leaves and
Male and female plants
The giant grass hoppers are invading the city!
The monohybrid cross between tall and dwarf pea plants