Simplify the following text for a Grade 8 native English-speaking person.
Original: ISIS members use the basic biologic information ( age , sex , parentage , place of birth , circumstance of death , etc. ) collected in the ISIS system to care for and manage their animal collections ( including demographic and genetic management in many cases ) .
Simplified: ISIS members use basic information ( age , sex , parents , place of birth , reports of deaths , etc. ) collected in the ISIS system to care for and manage their animals .