To measure primary production of algae in a stream, you place two sealed chambers in the stream, each enclosing the sediments as well as the water above them. one chamber is covered with black tape (blocking all light) while the other is transparent to light. you measure dissolved oxygen (do) before and after a 24-hour incubation. do in the light chamber increased by 1.5 g/m² while do in the dark chamber decreased by 2.0 g/m². (hint: you have all the information you need to answer the following 3 questions—you do not need initial and final do values. think carefully about what is actually being measured in each of the two chambers! )
what is the estimated ecosystem respiration (re) for the stream?

3 1/4 %

explanation:

2b2t

explanation:

2b2t

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.