The structure within the cytoplasm that converts energy is called:
a. prokaryotes.
b. transfer RNA (tRNA).
c. messenger RNA (mRNA).
d. mitochondria.
e. eukaryotes.
d
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In Lua' horticulture, women:
a. Play no role in cultivation but only process food. b. Harvest rice along with the men. c. Do all cultivation jobs except driving a tractor. d. Take care of the animals rather than work in the fields. e. Plant and harvest kitchen gardens but do not participate in growing or harvesting the principal crop.
The process of assigning an absolute age of materials is known as:
a. context dating b. stratigraphic succession c. relative dating d. chronometric dating e. calendric succession
The first fragments of Homo habilis were found at:
a. Olduvai Gorge. b. Laetoli. c. Afar region. d. Swartkrans. e. Lake Tanganika.
?The age of onset of menarche is affected by all of the following except
a. ?disease.
b. ?genetic patterns.
c. ?nutrition.
d. ?stress.
e. telomerase.