The shells of clams and oysters collect on the seafloor. over time they form a rock. what type of rock is it

An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?

Take a look at this dandelion. the yellow flower on the right is pollinated and the seeds on the left are transported by