Answer:
<em>Propoxur</em>
Explanation:
Propoxur is a well-known carcinogen. Using the EPA's cancer potency calculations and the results from our study, its found that daily lifetime exposure to the levels of propoxur residue found on dogs wearing flea collars could significantly increase the risk of cancer.
There are four phyla or categories of fish, Hagfish, lampreys, cartilaginous and bonyfish.
A negative charge that exists because of a covalent bond with hydrogen.
