Is there some sort of chart or something to this so you can add an image
By giving them reservations of land.
Answer:
Toxic Substances Control Act
Explanation:
Administered by the Environmental Protection Agency of the united states of America, the Toxic Substances Control Act of 1976 authorizes EPA to regulate the chemicals, record-keeping and testing, distribution of chemicals and restrictions on chemical substances and/or mixtures. Some substances, including food, drugs, cosmetics, and pesticides, are generally excluded from TSCA.
The answer would be the Canadian shield
The median would stay the same and the mean would increase