Pls answer me pls and thank you What causes a rain shadow? A. Mountain ranges cause air masses to cool and stabilize water vapor before it gets to lee side.

B. Mountain ranges cause moist air to cool, precipitate out its moisture on windward side.

C. Huge clouds formed by rising and cooling air block sunlight on lee side of mountain.

D. Dry air moving from desert regions pushes moist air away from mountain ranges.

20 point pls brianliest 1. what does a red shift mean? blue shift? 2. describe the big bang theory. according to this theory, how old is the universe? 3. scientists believe the universe is expanding. what is the evidence that supports this? 4. describe a nebula. 5. describe the 3 types of galaxies. what is a barred spiral galaxy? 6. what is a light year? how far is alpha centauri from earth? 7. describe the universal law of gravitation. be sure to include gravitational force between two objects. 8. describe the planets’ orbits around the sun. 9. what is the asteroid belt? where is it located? 10. describe rotation and revolution of earth. what determines an earth day and year? 11. how do galaxies exist? 12. compare and contrast the inner and outer planets. 13. what causes the seasons?