Answer:
The correct definitions are a, c and d
Explanation:
The definitions of system, heat energy and chemical energy are correct but the definition of surrounding is not correct.
Answer:
limestone is an example of organic sedimentary rock
Is this geometry? if so is there a picture i can look at to help you?
Answer:
A,B,D
Explanation:
I believe that "B" is a possibly one; if not, then just A and D.
Also by examining other economy; you can learn from it, what people do and how they live their lives, same with listening to different music from there, because people listen to different music in different cultures as well.^^
Have a great day, and let me know if its correct or not, if so I will take down the answer or fix it if its wrong.