A student compared the chemical composition of soil in a certain area with the bed rock beneath it. She found that the chemical compositions were different. Which statement would best explain the difference in chemical composition? A. the soil layers were mature because a large amount of time had passed.

B. the soil is all that is left of a different kind of rock that weathered away.

C. The areas rain and extreme temperatures caused the soil to develop

D. the rainwater washed iron oxide from the A to the D horizon.

liquid crystals are matters in a state which have properties between those of conventional liquids and those of solid crystals[1]. liquid crystal is partially ordered and anisotropic. in terms of molecular order, liquid crystal molecules have one-dimensional or two-dimensional long - range order.

answer; ///i believe that the correct answer is (a) specialized cells)

answer:   option a) glucagon was secreted by his pancreas before he ate the cookies because blood glucose was low. insulin was secreted after he ate the cookies because his blood glucose was high.

explanation: