A boy sets up a picnic on the beach next to a sand dune. How are sand dunes formed? A. erosion and deposition
B. weathering and erosion
C. tectonic plates
D. precipitation​

Which compound contain an iron with a 3+ charge

Consider the directing effects of the substituents on salicylamide and predict the possible structures of the iodination products. which do you think will be the major product?

You have a liquid that exhibits diltancy. you want to pour it from a bottle. what should you do to the bottle before pouring