Is there a difference between Aa and Pahoehoe lava? What is the difference?

Plz choose one of the compounds from the table and explain how you know the numbers of atoms in your formula. is it possible for two different compounds to be made from the exact same two elements? why or why not? with a limited number of elements (less than 120 are known), does this mean we also have a small number of compounds or do we have a large number of compounds in this world?

If i can still dissolve more sugar into the solution at a certain temperature what would i call that solution

The graph shows one consequence of urban sprawl. how did urban sprawl contribute to the change in biodiversity