The mixing of freshwater and saltwater is a characteristic of:

Desalination is expensive because it requires large amounts of energy.

In lakes, insect larvae, worms, and bacteria are usually found in the:

Using the same table from question 2, if you instead had an ecosystem where Catfish were the only primary consumer, how much new catfish biomass could be produced in a year?Food Chain =  Algae –> Catfish

Question 4:Using the terms associated with how energy flows through a food chain, explain why each m2 of lake is able to produce more zooplankton or catfish biomass.If eagles (bird, endotherm) were eating the catfish in this ecosystem, do you think more or less eagle biomass would be produced per m2 than northern (fish, ectotherm)?  Explain your answer.

Directions for Completing the Exam and Note on Grading:Once you have completed all of the questions in the exam to the best of your ability and feel ready to submit, follow these steps on Blackboard1) Press the “Submit” button at the bottom of this page.2) Exit the Honor Lock lockdown browser3) Take photos or scan the pieces of paper you wrote on during the exam. Make sure everything you wrote is legible in the picture/scan4) Within approximately 5 minutes of you submitting the electronic portion of the exam, upload the pictures of your written portion to the Blackboard Assignment titled “Exam 1: Modules 1 and 2 Written Work”A note on grading: As per the syllabus, we are using Standards based grading. For each module in the course, you can earn up to 2 points by displaying proficiency in that module.●      Proficient – worth 2 points●      Proficiency in Progress – worth 1 pt.●      Not Proficient – worth 0 pointsAs this exam concerns Modules 1 and 2, you may obtain 0-2 points for Module 1 and another 0-2 points for Module 2.

For questions 6 – 10, your answers will be entirely on your piece of paper. At the end of this question on Blackboard, just write “Done”. You do not need to enter anything else in this Blackboard assingment for questions 6 – 10, that will be submitted separately. Question 6   For the molecule shown below: A.    Draw the molecule shown and label all bonds in this molecule as either polar covalent (P), non-polar covalent (NP) or ionic (I) and indicate whether there are any partial or full charges on any of the elements.      Element Atomic Number Electronegativity Carbon (C) 6 2.5 Hydrogen (H) 1 2.1 Magnesium (Mg) 12 1.2 Bromine 17 2.8 Oxygen 8 3.5 Magnesium Bromide molecule.jpg Use the following table to answer Questions 7 and 8   Element Atomic Number Electronegativity Hydrogen (H) 1 2.1 Oxygen (O) 8 3.5 Nitrogen (N) 7 2.5   Question 7   Molecules are formed so that the valence shell of each atom in the molecule is full. For each of the atoms in the table above, draw a model that shows the number of electrons in the valence shell of each atom. Question 8 Draw the structure of a molecule that could be made using 1 nitrogen, 2 oxygen and 1 hydrogen atoms. Do not worry about whether the molecule is actually stable in nature, just try to fill the electron shells. Label all bonds as either polar covalent, non-polar covalent or ionic; and indicate whether there are any partial or full charges on any of the elements. Determine the bond type from the electronegativities Your molecule needs to have one double bond. Question 9 Draw the structure of a molecule that could be made using at least one atom of all four of the elements shown in the table below (C, H, O and F). Note, you can use more than on atom of any of the elements, but you have to use at least one of all of them. Do not worry about whether the molecule is actually stable in nature, just try to fill the electron shells. Label all bonds as either polar covalent, non-polar covalent or ionic; and indicate whether there are any partial or full charges on any of the elements. Determine the bond type from the electronegativities Element Atomic Number Electronegativity Carbon (C) 6 2.5 Hydrogen (H) 1 2.1 Oxygen (O) 8 3.5 Fluorine 9 4.0 IMPORTANT: If the difference in electronegativities between two elements is 0.5 or 1.5, then use the bond type below this threshold value.   Question 10   For each of the molecules shown below: Draw the molecules shown below. Label any partial charges that are present Draw water molecules anywhere where there would be an attraction between water and the molecule. Label the partial charges on the water molecules and use a dotted line to show the part of the water molecule that is attracted to the molecule you have drawn. Electronegativities: O=3.5, H=2.1, C=2.5, N=3.0, F=4.0 Serotonin.jpg 5-fluoro uracil, 5-FU.jpg

Don’t forget to upload your completed Excel file to the first question. Without showing relevant calculations and analyses on the Excel file, your score for each question may be adjusted. 

Please use the model in the range F3:G7 and Goal Seek to find the answer to this question.  IU would like to increase the total Home game attendance by approximately 1.5% from 362,393 in 2025 to 367,822 in 2026. However, there are 6 home games scheduled in 2025 compared to 7 home games in 2026. To reach 367,822 total attendance to Memorial Stadium in 2026, IU needs to fill the stadium at the minimum of [Capacity] % capacity for each game (enter the number with two decimal points; xx.xx).

 In the one-sided search model, if an unemployed worker turns down a job offer,