For a person living farther away from the equator, would the risk of vitamin D deficiency be uniform or vary throughout the year? If it would vary, how would it vary? Explain your reasoning?
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For a person living farther away from the equator, would the risk of vitamin D deficiency be uniform or vary throughout the year? If it would vary, how would it vary? Explain your reasoning?
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- Which of the following statements if FALSE regarding phosphorus? A. On average, Americans do not consume enough phosphorus in their diets B. Phosphorus is a component of ATP C. Phosphorus from animal sources is more readily absorbed than the phosphorus from plant sources D. Phosphorus is a main component in the boneThere is heat loss from one tropic level to another in the ecosystem. Explain why this heat loss occurs and is this heat really "lost" or does it get sorted someplace else?Why is a hot, humid day in the tropics generally more uncomfortable for human beings than a hot, dry day in the desert?
- The quantity of available nutrients ____________- from the lower levels ofthe energy pyramid to the higher ones.a. increases b. decreases c. remains stable d. cyclesAnswer the following: a. What is a nutrient cycle? b. What are the different types of nutrient cycles, and describe each briefly. c. What is the importance of the different nutrient cycles on Earth?From a purely ecological standpoint, can the problem of world hunger ever be overcome by improved agriculture alone? What other components must a hunger-control policy include?
- What effect does the agricultural industry have on climate change? Are all foods created equal in terms of their effect on the environment? Explain.What do you think are the reason why nutrients content/composition decreases as the elevation increases? What about the manganese concentration, what enables it to have a higher concentration at a higher elevation, compared to others?Most years, severe cold temperatures destroy a large number of grasshopper eggs. During one particular year, however, a mild winter allowed the grasshopper population to increase. This resulted in a well-fed frog and toad population as well as plenty of food for insectivorous snakes and birds. Unfortunately, the increased number of grasshoppers caused a higher percentage of crop damage due to insects. Which of the following best summarizes the food chain described in the paragraph above? crop --> grasshoppers --> snakes or birds crop --> grasshoppers --> snakes --> birds crop --> birds --> snakes crop --> grasshoppers --> toads --> birds
- Which of the following is true about global food production? A. If we continue growing crops for biofuel production and agricultural feed, we will be able to feed billions more people. B. If we eliminated the production of grain-fed animals and maintained current yield and cropland, it is predicted that we could feed an additional 4,000 million people. C. Although poverty is linked to hunger, food production is the major cause of hunger. D. To increase food production, the only option is to increase the yield per area farmed.Which of the following statements is true about food chains? Group of answer choices Energy cycles, nutrients flow one way Energy flows one way, nutrients flow one way Energy cycles, nutrients cycle Energy flows one way, nutrients cycleTrue or False: Do we need one small houseplant to produce enough oxygen for you to survive for one hour?