First of all, there are 46 individual chromosomes (23 pairs) in a human cell.
What happens in mitosis is that the original cell copies its DNA (so there are 2 sets of 23 pairs. In the end, after cytokinesis takes place, each daughter cell will have 23 pairs (46 chromosomes).
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1. availableity of the resource 2. the environmental impact of the resource 3. the renewability of the resource 4. the cost of the resource 5. the amount of energy it can produce and of what kind