What can a scientist do during an experiment so that others can repeat the experiment exactly the same way?
a. he should record the procedure steps but not the materials, tools, or amounts used.
b. he should write down numerical data only—the procedure steps are not important.
c. he should write down data and clear, step-by-step instructions as he goes along.

Which of the following are the functions of the integumentary system? yadda-yadda, the 1st answer is the brainliest. : )

In which of the following relationships is one organism always benefited while the other organism is always harmed

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?