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Suppose the trophic efficiency between producers and herbivoresis 0.1, the tropic efficiency between herbivores and carnivores is0.15, and primary production is 1,200 units per day.

What is the secondary production of herbivores?

a.

18 units per day
b.

90 units per day
c.

120 units per day
d.

180 units per day
e.

1,200 units per day

What is the secondary production of carnivores?

a.

12 units per day
b.

18 units per day
c.

27 units per day
d.

60 units per day
e.

120 units per day

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Trinidad Tremblay
Trinidad TremblayLv2
28 Sep 2019
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Related questions

1. You are an ecologist interested in energetics of ecologicalsystems. You begin your current research program with a study ofprimary productivity of corn plants growing in a field in Iowaduring mid-summer. At noon on a sunny day, you enclose a singleleaf (still attached to the plant) in a transparent chamber. Thechamber is connected to a measurement device called an infrared gasanalyzer, which is capable of measuring minute changes in theconcentration of carbon dioxide (CO2) of the atmosphere within thechamber. The chamber is also maintained at a constant 30°C (same asthe outside air temperature) during your observations. You firstexpose the corn leaf to full sunlight and observe that CO2 is beingdepleted by the leaf from the chamber at a rate of 18 mg CO2 per100 cm2 leaf area per hour. You then cover the chamber withaluminum foil to exclude all light and observe that CO2 is beingreleased by the leaf into the chamber at a rate of 3 mg CO2 per 100cm2 leaf area per hour.

Questions

What is the rate of net primary productivity for this leafduring the measurement period (In mg CO2 per 100 cm2 leaf area perhour)? What is the rate of respiration for this leaf (same units asabove)? What is the rate of gross primary productivityfor this leaf (same units as above)? At this site, cornis planted at a density that results in 75% of the surface beingcovered by leaves. What is the total net primary productivity forone hectare of this corn field (in g C per hectare per year)?Assume that day length averages 12 hours per day over the course ofa 180 day growing season and that your measurement isrepresentative of the NPP for the entire growing season. Show yourcalculations.

2. Maintaining dairy cattle in a CAFO requires large quantities of water and produces vast quantities of wastewater and manure. The increasing number of CAFO dairies in eastern New Mexico and West Texas is contributing to significant groundwater contamination and the depletion of the Ogallala aquifer. Consider a CAFO with 1,000 dairy cows and answer the following questions. (a) According to the U.S. Department of Agriculture, the average dairy cow can consume up to 200 L of water daily. An additional 120 L per cow per day is required to wash the milking equipment and milking area. How many liters of water are required to operate this dairy daily? (b) According to the U.S. Environmental Protection Agency, the average dairy cow produces 55 kg of wet manure daily. How many metric tons would this dairy produce each day (1,000 kg = 1 metric ton)? (c) The recommended maximum manure application rate for a farm site with low runoff potential is approximately 275 kg per hectare. What size farm would be required to apply all of the manure produced by this dairy each day? (d) Identify one environmental problem that could be caused if the rate of runoff of nitrogen from the manure into natural waters became excessively high. Describe one way to prevent this problem. (e) If this same dairy herd was raised in a free-range operation, identify and explain one environmental problem, other than water pollution, that would be minimized or eliminated.

Based on below tables just answer tWO PARTS OF question

Sample Case Study

Mrs. King is a 43-year-old married mother of four. Mrs. King is 5’ 4” tall, weighs 160 pounds, and has a history of mild hypertension. Her blood pressure is controlled with a low-sodium diet, and although her doctor told her for years that she should exercise, she tried running but found it unpleasant and discontinued all forms of exercise. She is currently sedentary. Her grandmother died as a result of heart disease from years of diabetes and high cholesterol.

Gender Female
Age 43 yrs
Height 5 ft. 4 in.
Weight 160 lbs.
Activity level Sedentary
Pregnancy/Lactation status Not Pregnant or Lactating

Begin New Calculation

Results:
Body Mass Index (BMI) 27.4
Estimated Daily Caloric Needs 1921 kcal/day
Macronutrients:
Macronutrient Recommended Intake per day
Carbohydrate 216 - 312 grams
Total Fiber 25 grams
Protein 58 grams
Fat 43 - 75 grams
Saturated fatty acids As low as possible while consuming a nutritionally adequate diet.
Trans fatty acids As low as possible while consuming a nutritionally adequate diet.
α-Linolenic Acid 1.1 grams
Linoleic Acid 12 grams
Dietary Cholesterol As low as possible while consuming a nutritionally adequate diet.
Total Water 2.7 Liters (about 11 cups)
Vitamins:
Vitamin Recommended Intake per day Tolerable UL Intake per day
Vitamin A 700 mcg 3,000 mcg
Vitamin C 75 mg 2,000 mg
Vitamin D 15 mcg 100 mcg
Vitamin B6 1.3 mg 100 mg
Vitamin E 15 mg 1,000 mg
Vitamin K 90 mcg ND
Thiamin 1.1 mg ND
Vitamin B12 2.4 mcg ND
Riboflavin 1.1 mg ND
Folate 400 mcg 1,000 mcg
Niacin 14 mg 30 mg
Choline 0.425 g 3.5 g
Pantothenic Acid 5 mg ND
Biotin 30 mcg ND
Carotenoids NA ND
Minerals (Elements):
Mineral Recommended Intake per day Tolerable UL Intake per day
Essential
Calcium 1,000 mg 2,500 mg
Chloride 2.3 g 3.6 g
Chromium 25 mcg ND
Copper 900 mcg 10,000 mcg
Fluoride 3 mg 10 mg
Iodine 150 mcg 1,100 mcg
Iron 18 mg 45 mg
Magnesium 320 mg 350 mg
Manganese 1.8 mg 11 mg
Molybdenum 45 mcg 2,000 mcg
Phosphorus 0.7 g 4 g
Potassium 4.7 g ND
Selenium 55 mcg 400 mcg
Sodium 1.5 g 2.3 g
Zinc 8 mg 40 mg
Non-Essential
Arsenic NA ND
Boron NA 20 mg
Nickel NA 1 mg
Silicon NA ND
Sulfate NA ND
Vanadium NA 1.8 mg

Questions: Please type your answer

A) Do you think Mrs King is currently meeting all her micro nutrient goals. Do you think this diet will provide her with all the vitamins and minerals she needs to be healthy why? AT LEAST 4 COMPLETE SENTENCES

B) Identify three changes to Mrs Kings day that would likely improve her long term health (do not restrict your answer to Diet alone)

( answer at least in 6 complete sentences)

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