What are the two chemicals that the body makes out of tryptophan? What do these two chemicals do?

Linda and julia are trying to determine whether their ideas are scientific or pseudoscientific. linda's idea is free of bias. julia's idea gives the same result when tested repeatedly. which statement is correct about linda and julia's idea?

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

10. in which phase will crossing-over occur? a. mitosis b. metaphase ii c. prophase i d. meiosis ii