Confidence votes 36. calcium is usually found under rocks and in bones and muscles In nature, calcium is found in rocks, chalk, and seashells. It is found in the bones, muscles, and nerves of animals and in many different plants.In the food you eat, there is a lot of calcium in milk and other dairy products.There is also a good deal of calcium in green leafy vegetables like spinach. Some foods like orange juice are frequently supplemented with calcium too.t is found in the bones, muscles, and nerves of animals and in many different plants. In the food you eat, there is a lot of calcium in milk and other dairy products. There is also a good deal of calcium in green leafy vegetables like spinach. Some foods like orange juice are frequently supplemented with calcium too.
View Full Document. 1  The incremental costs would be defined as the costs that are added by the additional pairs of shoes that the company is going to add to the production as well as the machine costs associated with them. 200 Shoes added to production = 20 + 0.16 X 200 = 23.2 + 2000 (Equipment Costs) = 2023.2 c.
Another cost type is step-variable, which is defined as follows: Step-variable costs are costs that stay fixed over a range of activity and then change after this range is overcome.In other words, these costs change in increments.ote that a narrow width means that a step-variable cost is sensitive to fairly small fluctuations in related activity. Other examples of step-variable costs and their cost drivers are provided in Illustration 10: