Which of these examples is a water-conservation technique that also reduces water pollution? a. factories making printing inks with water instead of chemical solvents b. farmers using fewer pesticides on farm fields c. factories reusing cooling water instead of returning it to a river d. farmers planting fields of coarse grass that filter out pollutants

In the example of adrenaline signaling, which steps represent an amplification of the signal? question 1 choiceschoice a., activated receptor activates g proteins, g protein binding by gtp, cyclic amp activation of protein kinase achoice b., activated receptor activates g proteins, activated adenylyl cyclase produces camp, active protein kinase a phosphorylates target proteinschoice c., receptor signal binding, activated receptor activates g proteins, activated adenylyl cyclase producing campchoice d., receptor signal binding, activated adenylyl cyclase producing camp, active protein kinase a phosphorylating target proteins