What illegal substance used by pregnant women produces an intense restriction of the arteries, causing a significant reduction in the flow of blood and oxygen to the fetus, thereby increasing the risk of fetal death and a number of birth defects and disabilities?

Amarine ecologist has constructed the conceptual model shown in the diagram. what predictions can be made from using this model? where the tertiary consumers get their energy how often primary producers are able to reproduce when bacteria and fungi initiate the process of decomposition whether other secondary consumers are present