Match the following with the correct shore where they can be found : . . a. patches of lichens. b. rough periwinkle, algae. c. barnacles, rockweeds, smooth periwinkles. d. green sea urchins, sponges, brittle starfish. 1.upper shore. 2.lower shore. 3.splash zone. 4. middle shore

A. Patches of lichens > 3. Splash zone
b. Rough periwinkle, algae  > 1. Upper shore
c. Barnacles, rockweeds, smooth periwinkles > 4. Middle shore
d. Green sea urchins, sponges, brittle starfish > 2. Lower shore

I hope that the following matches made will definitely come to your great help. 

Ithink option a is correct because you cannot donate a different blood group than yours because it won't match.option a says betsy can donate to mark. they have the same blood group so donation can happen.