is taken up by paper products.
b. Disposable diapers, plastic bottles, and large appliances together make up roughly
50% of a landfill’s volume.
c. Very little in our landfills actually biodegrades; after 20 years, from 1/3 to 1/2 of all
organic materials are still recognizable.
d. Organic material tends to biodegrade rapidly in our landfills, leaving abundant room
for other types of garbage; contrary to popular opinion, space for landfills around large
cities is in no danger of running out.
Petrographic and instrumental neutron activation analysis conducted on Micronesian
pottery determined which of the following?
a. Pottery found on the atolls was all manufactured on the high island of Yap,
confirming an ancient trade network between Yap and outlying atolls.
b. Pottery found on the atolls was all manufactured locally; each atoll had its own
source of high quality clay from which ceramic vessels were manufactured.
c. Although the clay used to manufacture most of the pottery came from the high island
of Yap, the actual manufacture of pottery took place on the atolls.
d. It was impossible to determine the particular high island that was the source of the
clay used to manufacture Micronesian pottery because the islands have such similar
geologic histories.