Well for it to be valid you are going to need a hypothesis,control,and variables. The control should be the plant food since it stays constant. And the variables should be the 2 different plants.
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Whether the animal has a vertebral column or not.
Answer:
Please u didn't finish your question. Please re-write ur question so that people who know the answer to ur question answer it. Hope u don't find it ..... to report it.
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Cytokinesis is necessary at last to complete both the cell division !