What might occur in moth populations if pollution from industry was cleaned up, and the color of tree bark returned to its natural color?
a. birds would prey on both dark and light color moths equally.
b. dark- and light-colored moths would survive in equal numbers.
c. birds would now see the dark moths easier than the lighter color moths.
d. dark moths would continue to be the predominant phenotype.

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?