Juan and Cindy are getting ready to go to prom. Cindy is lowering the temperature on the old, leaky air conditioning unit that emits freon gas (CFCs). Juan, her date, is coming to pick Cindy up in his 4 ton Truck-a-Saurus, which burns a lot of gas. The Truck-a-Saurus is fuel efficient at a rate of 2.3 miles per gallon. Cindy’s father, Earl, is clearing a 500 acre forest behind their house in order to plant pole beans.

Me brainliest 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?