Cell Differentiation and Tissue. Within multicellular organisms<span>, </span>tissues<span> are organized communities of cells that work together to carry out a specific function. The exact role of a tissue in an </span>organism<span> depends on what types of cells it contains !
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3. positive and a negative ion
Answer:B
Explanation:
The last pair are sex chromosomes. Different pair is XY which is a male chromosome. Same pair is XX which is Female