Pond ecosystem considered as an open ecosystem because pond is always open . There is an interaction of pond with atmosphere , due to which it ecosystem becomes open.
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ik the answer and it is the second one im positive abt this!!
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It would be 100% purple flowers because 4 quarters equals 1.00 and it would be 50% white flowers because 2 quarters equals 50
Answer A is correct think about Pompeii plz give Brainlyist
