The Big Rip Refers to the

question 15

Multiple Choice

The Big Rip refers to the

• A)accelerating influence of dark energy,causing all matter to become completely ripped apart.
• B)phenomenon of dark energy causing the universe to rip into multiple spacetimes.
• C)possibility that galactic centers may suddenly implode causing galactic disintegration.
• D)phenomenon of dark energy decelerating,causing all matter to disintegrate.

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Definitions:

Vertebrate Embryo

An early stage in the development of animals with backbones, where the fundamental structures that define the vertebrate form are established.

Neural Tube

The hollow, longitudinal structure in the early vertebrate embryo that gives rise to the brain and spinal cord. The neural tube forms from the neural plate, a flattened, thickened region of the ectoderm that rolls up and sinks below the surface.

Neural Plate

The flat layer of embryonic ectodermal cells that develops into the nervous system, including the brain and spinal cord.

Neural Fold

Embryonic structure that folds to form the neural tube, which later develops into the central nervous system in vertebrates.