Self-study
Since 1989 the importation of ivory from African elephants into the United States and Canada has been illegal, but the importation of ivory from the excavated tusks of ancient mammoths remains legal in both countries. █████████ ███ ████ █████ ███ █ █████ ████████ ██ ███ ███████████ ██ █████ ████ █████████ ██████████ ██ ███████ ██████ ██ ████ ███████ █████████ ██████ █ █████████ ███ ██████████████ ████████ █████ ████ ████ ██ █████████ ████ █████ ████ █ █████████ ███ ████████ ███ ███ ███ ██ ███████ █████████ ██████ ██████ ██████ █████ ███ █ ████████ ████████ ██ ███ ██████ ██ █████ █████████ ███ ███████████ ████ ███ ████ ███ ██████ ████ ███ ██████████ ██ █████████ ██ ███████ ██████
Summary
Since 1989, importing ivory from African elephants into the US and Canada has been illegal. But, importing ivory from ancient mammoths is legal. Following the 1989 ban on importing elephant ivory, there was a sharp uptick in ivory imports labeled as mammoth ivory. However, once a technique was developed to reliably distinguish between elephant and mammoth ivory, there was a dramatic decline in the amount of imported ivory labeled as mammoth ivory.
Strongly Supported Conclusions
Before the technique to distinguish between the two types of ivory was introduced, much of the ivory labeled mammoth ivory was actually elephant ivory.
Analysis by AlbertGauthier
3.
Which one of the following ██ ████ ████████ █████████ ██ ███ ███████████ ██████
a
Customs officials still ██████ ████████ ███████████ ████████ █████ ████ ███████ ██████
b
Most of the █████ █████████ ████████ ████ ███ ████ ███ ██████ █████ ████ ███████ ███████ █████████ ███ █████████
c
In the period █████ ███ █████████ ███ ██████████████ ████████ █████ ████ ███████ █████ ███ ████████████ ███ ██████████ ██ ███████ █████████ ███ █████████
d
Much of the █████ ████████ ██ ███████ █████ ████ █████ ███ ███ ██ █████ ████ ███████ █████████ ████ ████ ██████ ███ ████████ ████████ ██████
e
Shortly after the ███████████ ██ █████ ████ ███████ █████████ ███ █████████ █████ ███ █ █████ ████████ ██ ███ █████ ██████ ██ ███ █████ █████████ ███ ███████████ ████ ███ ████ ███ ███████