A socio-ecological system consists of 'a bio-geo-physical' unit and its associated social actors and institutions.
Contribution Margin. Contribution margin is a productâs price minus all associated variable costs, resulting in the incremental profit earned for each unit sold. The total contribution margin generated by an entity represents the total earnings available to pay for fixed expenses and to generate a profit. The contribution margin concept is useful for deciding whether to allow a lower price in special pricing situations.
For example, if you have variable costs of $10,000 to produce 1,000 units, then the variable cost per unit is $10. Step 2. Calculate the contribution margin per unit of each product by subtracting the variable costs per unit from the unit-selling price -- that is the price you sell a single unit for.For instance, with a variable cost per unit of $10 and a unit-selling price of $20, the contribution margin per unit would be $10.Step 3.Calculate your market share in volume by dividing the number of units that you produce for the market by the number of units produced in the overall market.or instance, with a variable cost per unit of $10 and a unit-selling price of $20, the contribution margin per unit would be $10. Step 3. Calculate your market share in volume by dividing the number of units that you produce for the market by the number of units produced in the overall market.