Where does the halo of a galaxy expand from? 1) the local group out to the dark matter

2) the bulge out to the edge of the disk

3) the irregular cluster out to the regular cluster

4) the edge of the disk put to the bulge

i'm guessing this is from edg enuity so the answers would be, from top to bottom,

theodor schwann

matthias schleiden

robert hooke

rudolph virchow

anton van leeuwenhoek

a ratio derived from the equality between two different units that can be used to convert from one unit to the other. information obtained from experiments, sometimes called experimental results. the part of the experiment that is affected by the independent variable.