For his science project, Austin wants to determine if the pH of standing rainwater and places it indoors in a spot that does not receive a lot of sunlight to limit evaporation. Using a pH testing kit, he measures the pH of the water once a day for 20 days. What is the independent, or manipulated, variable in Austin's experiment?
A. the number of days the rainwater was allowed to sit
B. the number of times the rainwater was observed
C. the change in the amount of rainwater due to evaporation or
D. the change in pH of the rainwater over time
I think the answer is D. Please help! Thanks :)
1. d
2. a
3. d
4. b
5. d
6. a
7. c
8. a
9. d
10. d
11. c
12. b
13. true
14. dependent(or responding)
15. trade-off(or trade off)
16. patent
17. opinion
18. constraints
19. constant(or control)
20. literacy
21. risk-benefit analysis(or risk benefit analysis)
22. ethics
22 is predicting and 23 is ethics
hope this helped :D
This is answer for question 24:
Over time, science has become a major impact in our community. People discover, invent, and think of ideas that are all over the world. This is one of the reasons why science is an ongoing progression of study. Scientists study their theories and think of ideas for inventions that will help us in our community. When they find discoveries around the earth, they study the discoveries and show them to the people around the world. Discoveries can be found practically everywhere around the world! In the deepest of ocean, hottest of deserts, coldest of arctics, the farthest of jungles, everywhere! Studying these theories, ideas, and discoveries helps develop the process of science. If this keeps going everyday, science could help us a lot in our community and the study of science would be continuous!
Hope this helps! ^_^
lun is always right 100% all the time he has never let me down
Lol!!! Y'all gots to do that in your own words or the teacher gone know y'all been on here! Just like how they use that thing called CheckMyWork to see if we been plagiarizing or writing so if y'all do get the answers reword it
Lun I didn't even take your answers yet but, YOU THE REAL ONE MAN! Thx
Thank you Lun, you are very nice to be willing to help. <3
24 is because new evidence can change a theory
25 is new knowledge can change or create a theory
sorry if you dont see this helpful