What principle mandates strict adherence to preventing biological cross-contamination between Earth and other worlds?

Answer

Planetary protection agreements designed to prevent Earth microbes from obscuring the search for native extraterrestrial life

Planetary protection is governed by international agreements intended to prevent Earth microbes from thriving in new environments or obscuring the ability to detect native life forms, such as on Mars or Europa.

What principle mandates strict adherence to preventing biological cross-contamination between Earth and other worlds?
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