Weight is dependent on the force of the gravity. Mass is the amount of matter a object contains. So if you would go to the moon your weight would be different but your mass would be the same
The answer is C) The death rate begins to fall, but the birth rates remain high for a time. No countries in the world are currently in Stage 1 or demographic transition. However, many are in stage 2, which is why many governments are concerned about overpopulation.
B Glycoproteins allow a virus to recognize and attach food
The answer possibly could be a drought but I’m not 100%