What is the rocks real weight?

Do all metals and metalloids have luster? What to do when you loose a membrane in a kazoo? How many 6x6 tiles do you need to make 70 square feet? What part of eye send message to brain so that a person can see? What was the first country to officially institute Daylight Saving Time? Is the wind that blows from the south dry or wet or hot? What is 18 degrees north latitude 63 degrees west longitude? What does it mean when something goes into solution in water? Is alcohol digested slowly by the stomach and small intestine? Why are enzymes important in a cell? Does an element on the periodic table decrease in atomic size when you move across a period from left to right and when you move down a group? What are the components of pesticide that can be found in makahiya Mimosa pudica? For atoms of most elements the outer energy is filled when it has 8 electrons true or false? What polygenic trait can have many possible genotypes and -? Do inert gases ignite spontaneously? What does the throat of a volcano do? What is sona bath? What is a method of grouping organisms together according to their evolutionary name? Who discovered that plants add oxygen to air? Does Water pressure increases as depth increases?