​What is characteristic of chlorinated hydrocarbons? 

A)  ​They degrade faster than other organic pesticides. 
B)  ​They are likely to be target specific. 
C)  ​They can be biologically magnified. 
D)  ​They are more toxic than other organic pesticides.

Chlorinated hydrocarbons, such as DDT, can be biologically magnified, meaning the concentration of the chemical increases as it moves up the food chain. This is because the compounds are persistent and do not break down easily. As a result, organisms at higher trophic levels can accumulate high levels of the chemical, leading to harmful effects on their health and reproduction.