Breathing and acid-base balance lab report 10 1. what was the starting color and final color for beaker 1? what was the time to change to the final color (include your units)?

Arecipe calls for 1.2 cups of oil. how many liters of oil is this?

Which type of fossil does this image depict?

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.