Which of the following is a clue of a chemical change?
a. balls of wax form when melted wax is poured into ice water
b. iron changes color when heated
c. gas bubbles form in boiling water
d. a gas forms when vinegar and baking soda are mixed?

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?

answer: i dont know the answer but this might

explanation:

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