B30: 14: The brown lemming is another type of lemming that lives in the arctic. Brown lemmings and collared lemmings are closely related species. Which of the
following describes how scientists can best study the differences between these two
species?

In this experiment, the was intentionally manipulated. it is the independent variable. the dependent variables that were measured were the

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?

Use the distance formula to determine weather each pair of segments have the same length