Here Are Some Common Characteristics That Might Answer Your Question
Source:Collective Evolution | by
Planet Earth houses an estimated 8.7 million different species, with approximately 6.5 million living on land and 2.7 million in the oceans. We have an abundance of different animals and fish living all over this big blue sphere, and when you really stop and think about the vastness of this planet, it’s pretty amazing.
Keep in mind, this is only one planet; a tiny spec within this giant thing we call the multiverse. We know that 8.7 million different species live on our planet alone, so how many actually live out there?
It’s a puzzling question, and sobering, too. Even if just one more planet in the universe held the same diversity of life, that would represent a further 8.7 million species to discover. And if one more planet has life, it’s reasonable to assume others…
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