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Reproductive success is heavily influenced by life-history traits; a series of energy investment trade-offs that organisms must optimise according to their environmental conditions. These include considerations such as how many offspring and when to reproduce? The consequences of multiple trade-offs can be extremely complex, making research difficult. However, there are notable exceptions. Simple clutch size theory enabled great strides in assessing trade-offs in resource allocation, though it quickly becomes more complicated when considering investment in current versus future reproduction. Arguably, even greater success has come from consideration of investment in a particular sex. Sex all...
On what would be his 45th birthday, Edward Mathison pauses and reflects on the question of 'what if'? Edward is a rising star in the FBI when he gets a call that will forever change his life. Little does he know, that phone call will set the stage where he will have to make a choice; the choice of giving up his life for his sister's, Lily, or to let her die. His answer will make him a Defender in Purgatory and Ryan Woods on earth. Fifteen years later, Edward begins to feel disenchanted with the role and cites Jesse Knight as one of the reasons. Before long, he is summoned back to Purgatory where he is accused of and charged with murder. The victim, his sister, Lily. The ramifications of this...
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