According to the concept of the tragedy of the commons, what happens to shared resources over time? a. they are safeguarded. b. they are sold for profit. c. they are protected from degradation. d. they are depleted.

Write a net ionic equation to show that hydrofluoric acid, behaves as an acid in water.

Will give brainliest it is a lab from k12 here is the linkfor each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. type your answer here. (score for question 3: of 5 points) were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. type your answer here. (score for question 4: of 5 points) make a general statement about the reactivity of the metals in this experiment. type your answer here.

Which of the following are sources of revenue for media companies? a. direct sales to producers b.advertising and subscriptions c. online purchase d. capital investments