December 21 is the first day of winter in the northern hemisphere. What season is it in the southern hemisphere?

Mineral rich water heated by newly found oceanic crust escapes through cracks in the ocean floor called

Were you able to observe the nucleolus in any of the cells if so which ones

Which statement correctly describes other ways in which nebulae and stars are different? a. a star always has a higher density than a nebula. b. stars can form inside a nebula but a nebula can never be produced by any star. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star. reset submit