The correct term is "Extinction"
Relocation is when you force species to change natural habitats, extermination is when you purposefully kill them, and genocide is complete eradication based on ethnicity, race, or religion.
shallow- pronoun (describing burrows)
wet- pronoun (describing sand)
cool- pronoun (describing evening)
burrows-noun
sand- noun
evening-noun
no pronouns.
Persecuting, in this context, means treating them unfairly. He massacred them in what is known commonly as the holocaust.