Difference between Cell membrance and cell wall​

In which process is oxygen absorbed by an organism asap apex

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

About how many years does it take for one cycle of surface water to become deep water and then surface water again in the oceans? 101001,000