Explain how the digestive/excretory system is similar to the recycling system 5-7 paragraphs

Me i dont know what to do! the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

How many grams of aluminum will there be in 98g of al2o3?

Which statement best describes the flow of energy in this scenario