The chart shows the costs and shipping times for materials that a company needs to build a new product. Which describes the best trade-off if the company needs to start building their product within the next two years? A. They should order the domestic materials because it is always best to choose the fastest shipping time. B. They should order the imported materials because it is always best to choose the lowest cost for materials. C. Since the shipping time is longer, they should order the domestic materials because the additional cost is worth it to get the materials in time. D. Even though the shipping time is longer, they should order the imported materials because they are less expensive and should arrive in plenty of time to build the product.

D. Even though the shipping time is longer, they should order the imported materials because they are less expensive and should arrive in plenty of time to build the product.

4.) metal

"-the movement of carbon from the nonliving environment into living things and back to the environment

-carbon is the essential component of proteins, fats, and carbohydrates (which make up all organisms)

-carbon exists in air, water, and living organisms

-producers convert carbon dioxide in the atmosphere into carbohydrates during photosynthesis

-bacteria in the atmosphere cycles through the system in filtration units

-in cellular respiration, carbon is released back into the atmosphere as carbon dioxide

-some carbon is stored in limestone (forming one of the largest "carbon sinks" on earth)

-largest carbon reservoir on earth= limestone

-carbon stored in the bodies of organisms as fat, oils, or other molecules may be released into the soil or air when the organism dies

-this may form deposits of coal, oil, or natural gas (fossil fuels, which increased the atmospheric carbon dioxide)

-fossil fuels store carbon left over from bodies of organisms that died millions of years ago

-they are located in the surface of earth, deep within the earth and beneath the ocean floor."