in the new 6 kingdom system of classifacation like the old 5 kingdom system organisms are basically grouped by ?

What must happen before a body cell can begin mitotic cell division

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. 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.