Answer:
D it causes river channels to change shape
The O stars is the most luminous, then B, then A, F, G, K, and M stars are the least luminous_____ there must be a relationship between mass and luminosity.
'' Ecosystem ,the fabric of life on which we all depand and enjoying the life peacefully . Are declining rapidly beacuse of human activites . But still time to save them .
D) despicable a diversified biological