All of the following questions are testable in a scientific exploration about changes to earths surface except-a: how can the effects of wind and water erosion be measured? b: how does water erosion and deposition result in construction of a delta? c: why the sun appear to move across the sky? d: what constructive forces result in changes to earths surface?

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? they should order the domestic materials because it is always best to choose the fastest shipping time. they should order the imported materials because it is always best to choose the lowest cost for materials. 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. 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.