ABIOTIC/BIOTIC, SYMBIOSIS AND INVASIVE SPECIES EL REVIEW

A FLEA HOOKS ONTO A MOUSE AND DRINKS THE MOUSE'S BLOOD. WHAT KIND OF SYMBIOSIS IS THIS

HERMIT CRABS LIVE IN SNAIL SHELLS THAT THE SNAIL HAS LEFT BEHIND. THE CRAB GETS A HOME AND THE SNAIL IS UNAFFECTED. WHAT KIND OF SYMBIOSIS IS THIS?

OSTRICHES AND GAZELLE EAT NEXT TO EACH OTHER. THEY BOTH WATCH OUT FOR DANGER. WHAT KIND OF SYMBIOSIS IS THIS?

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