Im guessing it is due to gene shuffling
A group of cells that performs a similar function is known as tissue.
Explanation: Survivorship curves fit three types. A Type I curve shows a low death rate in early and middle life but the death rate increases steeply in old age. A Type II curve shows a death rate is more constant throughout the lifetime of the species.
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>