When a strip of magnesium metal is touched to a flame, a bright light and a whitish substance are produced. why is ghe burning of magnesium considered a chemical change

1) describe the physical layout of the ocean floor ? 2) explain how the dumbo octopus swims differently than other octopus species and why this would be an advantage in the aphonic zone . 3) why are the types of organisms that live at each underwater hot vent so dramatically different ?

Which suspect most likely committed the robbery and how do you know

The footprints of a dinosaur and the burrow of an ancient shrimp are examples of which kind of fossils