I believe C is the answer, may be wrong though.
Answer:
I believe its C
Explanation:
C because when you'll have control over the variables (salt and water) You can measure how much salt or water is actually needed to determine the freezing temp.
Answer:
A rainbow is caused by sunlight and atmospheric conditions.
Answer:
Bahrain, Kuwait, Oman, Qatar, Saudi Arabia and the United Arab Emirates (UAE).
Answer:
Rainwater will create a jagged surface on the rock... I think... But I am pretty sure
Explanation: