Struggle for Existence

<p>Escaping Earth was just the beginning.</p><p></p><p>Two days before a comet wiped out civilization myterious pods carried dozens of people to a strange menagerie inhabited by deadly specimens from Earth's past.</p><p></p><p>Sierra Preston made first contact with an alien that had been observing humans from and invisible floating platform. The creature claimed the comet was sent by a race known as grogers and warned that no one could leave the menagerie.</p><p></p><p>Sierra isn't about to let that stop her.</p><p></p><p><strong><em>The Preservation of Species</em></strong> trilogy continues in <strong><em>Struggle for Existence</em></strong> a post-apocalyptic science-fiction advetnure filled with unforgettable heroes terrifying monsters and heart-pounding action.</p>