Biotic refers to the living factors and abiotic refers to the nonliving factors.
i think anus hope this helps
Vacuole. Amoeba is a unicellular organism formerly grouped under Kingdom Protista. Amoeba in freshwater need contractile vacuole to control input and output of water. (osmosis). Without this structure, ameboid cells will be filled with water and eventually burst.
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I feel it's to easily differentiate the positive from the negative...... like in gram staining of bacteria, the colour tell us which bacteria is gram positive or gram negative...... I just feel that this is science and it is advisable to know what the opposite result of an experiment should look like.
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The answer is A because the water has strong surface tension, I didn't know why but I know it's surface tension holding it up so it has to be A
