How do scientists know that dark matter exists?
A. They assume that anything invisible has to be dark.
B. Something has to be there to form superclusters.
C. The Redshifts give the dark matter away.
D. They observe gravitational lensing bending the light of other objects in space.

Which statement correctly compares metaphase i and metaphase ii? in metaphase ii twice as many chromosomes line up along the middle of the cell as in metaphase i. in metaphase i twice as many chromosomes line up along the middle of the cell as in metaphase ii. in metaphase ii twice as many chromosomes are pulled to opposite ends of the cell as in metaphase i. in metaphase i twice as many chromosomes are pulled to opposite ends of the cell as in metaphase ii.