7. which formation theory suggests that galaxies formed when massive protogalactic clouds
fragmented into smaller gas clouds that then formed into individual galaxies?
uod
a. bottom-up
b. top-down
c. lambda dark matter
d. galaxy collision

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?

Answer asap need it by wednesday morning calculate the ph of 0.02m hcl best answer will be brainliest