DNA replicates by breaking the bonds between its two strands, after which each strand? A. grows to double length.
B. synthesizes a new strand
C. takes a spiral appearance
D. winds back upon itself

80 points pls 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?

Which is a kingdom? protistachordataprokarya mammalia

Everything in the universe originated from a single point. how was it possible for everything in the universe to have occupied a single point in space?