What job does a sperm cell do?

Someone me with this: a mineral' is determined by its actomic structure.

Solutions to environmental problems in europe must

1) what three conditions must be present for minerals to form through natural processes? 2) why are minerals considered inorganic substances? 3) how do oxides differ from other minerals that contain oxygen atoms? 4) how is a sulfide different from a sulfate? what makes native elements unique?