A cell makes an error in dna replication and incorrectly pairs a T with a G. Please identify the correct letter that should be paired with T. Could the cell look and function differently now that it’s dna has changed?

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?

What factors contribute to the effect an environmental toxin has on the human body?

Math focus 4. calculate a map has index contours at 250 m, 500 m, and 750 m. what is the contour interval?