Question 1 all of the following are possible sources of error in a scientific investigation except for a. manipulating the wrong variables in the experiment. b. completing only one trial in the experiment. c. measuring the change in temperature incorrectly. d. reviewing previously published studies before the experiment.

What noticeable trend from this graph might be used to make a conclusion?

This is so important ugh its 25 points

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?