1. when studying animal behavior, the distribution of organisms within a choice
chamber can be studied to identify animal preferences. 20 isopods are
placed in a 2-choice choice chamber. a cotton ball dampened with distilled
water is placed in chamber a; a dry cotton ball is placed in chamber b.
after 15 minutes 2 isopods are located in chamber b, and 18 isopods are found
in chamber a. perform the chi-squared test to determine if the distribution
of isopods is significant or due to random chance. (3 points)

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?