Paper Title
Combined Effects Of Heavy Metals And Cyanobacterial Crude Extractto Daphnia Magna

Abstract
A chronic test has been done to test chronic effects of combination of copper (Cu), Chromium (Cr) and cyanobacterial crude extract (CCE) to Daphnia magna. The result shows the combination of Cu, Cr and CCE impacted to survival rate, maturation and fecundity of D.magna. The combination of Cr +CCE caused the effects that more severe to survival rate and fecundity of D.magna than in the single Cr or CEE. Whereasthe combinationeffects of Cu + CCE or Cu +Cr+ CCE to D. magnawere less toxic than in the single Cu. Maturation was significant been late in D.magnaexposed to the combination of Cu, Cr and CCE.