ii. Calculate the average change of dissolved oxygen per year in the lake over the course of the study. Show your work.

The following question refers to a pond in southern Canada. In 1950 the pH of the pond water was 8.2, but by 2000 the pH had decreased to 5.2. Which of the following changes would also be expected in the pond over the same time period? I. Increased levels of dissolved oxygen II. Increased levels of heavy metals III. Increased number of fish species II and III III only I only II only

Answer the questions below.Note that a change can be an increase or a decrease.For an increase, use a positive number.For a decrease, use a negative number.(a)Laura pumped 42 gallons of water out of her pool. This was done over a period of 6 minutes at a constant rate. What was the change in the amount of water in the pool each minute?7gallons(b)Carlos added 8 fish to his pond each day for 72 days. What was the total change in the number of fish in the pond?576fish

Calculate the amount that the pumped water would raise the level of the dead sea by every year assume that there is no loss of sea level by other means.  use volume = surface area x length

(b)     Calculate the average power output from the water in the kettle to the surroundingsin 2 hours.

• Write a hydrologic budget equation for the scenarios below, and calculate the change in storage. Also write whether the hydrologic budget is at a loss, a gain, or at steady state. 1. Precipitation = 72 in/yr 2. Evapotranspiration = 59 in/yr 3. Surface water Runoff = 9.6 in/yr 4. Groundwater pumping = 3.4 in/yr