Help me fast and i brainliest. A student vertically stands five books several inches apart in a row. She then pushes the first book with her finger, and a few seconds later, the last book falls.

Which statement correctly defines this chain of events?(1 point)

There is only causation between the force of the finger and the movement of the books.

There is correlation but no causation between the force of the finger and the movement of the books.

There is only correlation between the force of the finger and the movement of the books.

There are correlation and causation between the force of the finger and the movement of the books.

An electromagnet is a device in which moving electric chargers in a coil of wire create a magnet.whats one advantage of using electromagnetic in devices

Describe cytokinesis in plants and animals. in animals: in plants.

People with normal vision cannot focus their eyes underwater if they aren't wearing a face mask or goggles and there is water in contact with their eyes. in a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina.with the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 2.05cm in front of the eye.)