1. The following questions refer to the light and dark bottle technique for measuring productivity

(a) After the second oxygen measurement, which bottle do you think would have generally have more or about the same amount of oxygen in it, and which bottle would generally have less oxygen in it than the original amount? Why"

The light bottle will have more or around the same amount of oxygen in it because photosynthesis (light energy is used to convert carbon dioxide and water into carbohydrates and oxygen), sunlight can penetrate through glass, therefore photosynthesis is possible and oxygen which is one of the end products of photosynthesis, is evident. The darker bottle has less oxygen in it because sunlight can't easily penetrate through darkened or painted material. Therefore with less photosynthesis there is less oxygen. Also the less sunlight means less energy and productivity in the...