The reason some toxic chemicals such as DDT & DDE lead to bioaccumulation in our environment is: A) they break down easily B) they taste good C) they are persistent toxins D) they only affect invertebrates such as insects E) they are not fat soluble

The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates

The spermists believed that: the male made the only hereditary contribution to the offspring the male and female traits were blended in the offspring the female made the only hereditary contribution to the offspring the male and the female made equal contributions to the next generation

Describe characteristics of a good respitory surface