From which of the following do spiral galaxies form?
a. rapidly cooling protogalactic clouds
high-density protogalactic clouds
rapidly spinning protogalactic clouds
colliding/merging protogalactic clouds

Which of the following two events occur to create a sea breeze? select all that apply. warm air rises on the ocean and moves toward the land to cool warm air rises on land and moves toward the ocean to cool cool air moves from the ocean to be warmed by the land cool air moves from the land to be warmed by the ocean

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?

What is the molecular weight of copper