How would the acidic solution affect a clam living in the ocean ? what does a weakened shell mean for the clam​

Well, both latitude and intensity of light affect temperature because, the higher the light intensity, the higher the temperature and since latitude is the measure of how close you are to the equator, then the closer to the equator you are, the higher the temperature is.

1.989×10^30 kg is the weight of the sun.