Should be A. Species have changed over time.
If it killed the top level of an ecosystem it would damage the whole ecosystem because it's connected. An organism depends on that top organism which would mean that is that organism dies it would affect the organism that depends on it.
Factor<span> in the generation of large coastal </span>surges<span>. Corresponding ... larger than </span>Hurricane<span> Camille </span>during<span>its entire passage through the Gulf of ... Consequently, </span>most hurricane surge<span> studies, for both ... </span>factors<span>for </span>hurricane surge<span> response (</span><span>e.g., Berke et al. 1984). ... cal </span>storm<span> events with </span>coastal erosion<span> and overwash</span>