Which sentence uses supporting evidence to form the best conclusion about a rattlesnake? O A. The rattlesnake cooled off at night by swimming in the cold water, so it is an endotherm. B. The rattlesnake moved rapidly to stay warm when its body temperature dropped, so it is an endotherm. O C. The rattlesnake ate a great deal in order to stay warm, so it is an ectotherm O D. The rattlesnake's body temperature responded quickly to the environment, so it is an ectotherm.​

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?