2. does the data support or refute the hypothesi
3. other than holding your breath, what can affe
that can affect heart rate.
4. choose one of the variables from your list, and
heart rate.
5. formulate a hypothesis about how the variable
6. test your hypothesis, and record the data in a
7 cunort or refute the hypothesis based on 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?