Suppose you have samples of three unknown solids. Explain how you could use their properties to determine whether or not they are ionic solids.

the answer to your question is c.

if you read the house of usher you should know that the house was haunted

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.