A food diagram is provided. Based on the diagram, it is reasonable to conclude that matter could follow which of the following paths as it cycles through this ecosystem?

A. Sun —> Grass—> Robin

B. Plant seeds —> Field mouse —> Robin

C. Eagle —> Deer —> Plant seeds

D. Grass —> Deer —> Mountain lion

For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)