Figure (a) below shows the percentage of rock cover occupied by three different species over four years. Figure (b) presents the results from four different manipulations and a control looking at the mechanism of competition. What are reasonable conclusions from this graph (hint there are two)? Rock cover (percent) (a) 100% 75- 50 - 25 0 Little brown barnacle MJS 1983 J Acorn barnacle 1984 S Macroalgae MMJ S N 1985 M M 1986 Belas Ecobe. Se 2021W H Freeman and Company 27