What is the difference between the grassland and savanna biomes? O Grassland biomes are closer to the equator and receive more rain.
O Savanna biomes are closer to the equator and receive more rain.
O Grassland biomes contain mostly grasses.
O Savanna biomes contain mostly grasses.

Express the following number in scientific notation. 0.026890 =

Place the elements below in order of decreasing ionization energy. aluminum(al) chlorine(cl) magnesium (mg) sulfur(s)

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.