Energy starts in the sun and is transmitted to an apple that is eaten by a horse.

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

What human activity increases beach erosion?

Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?