Final answer:
The Nile's rising waters had a positive impact on the ancient Egyptian civilization by bringing fertility to the land and joy to its people due to the predictability and benefits of the floods.
Step-by-step explanation:
According to the song about the Nile River rising, two of the effects were the fertility of the land and a sense of joy among the people. The annual flooding brought with it rich sediment that was essential for agriculture, making the land fertile and thereby contributing to the prosperity and happiness of the civilization that depended on it. The Nile's predictable flooding was integral to Egyptian culture and its agricultural cycles, embodying the concept of Ma'at—order, balance, and harmony—contrasting the destructive floods of Mesopotamia. The rise of the Nile signaled a time of renewal and abundance, allowing the Egyptian civilization to flourish.