Pesticides that build up in the bodies of animals or humans are referred to as what?

Pesticides that accumulate in the bodies of animals or humans are accurately referred to as accumulative. This term indicates that these substances can gradually build up over time, often through repeated exposure, rather than being eliminated from the body. Such substances tend to persist and can elevate to toxic levels, leading to potential health risks for both wildlife and humans.

Non-accumulative would imply that the substances do not build up in the body, which is not applicable here. Fatty deposits are not a term typically used to describe pesticide accumulation; instead, they refer to the body's storage of fat. Residual refers to the remaining amount of pesticide left after application, but it does not indicate the accumulation in living organisms over time. Therefore, accumulative is the most accurate term to describe pesticides that pose a long-term risk due to their tendency to build up in living tissues.