In his studies of colonization of hard substrates by various subtidal invertebrates, Michael Keough found that, among patches created within larger areas of rock occupied by sessile invertebrates, __________ more successfully colonized patches of all sizes.
A) the better competitors, tunicates and sponges,
B) the disturbance-adapted species, bryozoans and polychaetes,
C) the large predators, such as starfish,
D) microbial films, consisting of bacteria and fungi,
Ans: A) the better competitors, tunicates and sponges,
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