Wolves In Alaska Case Study

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Register to read the introduction… Wolf populations in Alaska are separated by thousands of miles from wolf populations in the northern Great lakes of the lower 48 states. Wolves in both populations look similar and have similar behaviors. However, the U.S. government has treated these two populations quite differently, listing the Great Lakes populations as endangered until recently but allowing hunting of wolves in Alaska. Some opponents of wolf protection have argued that the “wolf” should not be considered endangered at all in the U.S. because of the large population in Alaska, while supporters of wolf protection state that the Great Lakes population represents a unique population that deserves special status. Should these two populations be considered different species? What information would you need to test your …show more content…
Increased burning of fossil fuels is rapidly increasing the concentration of CO2 in the Earth’s atmosphere. This CO2 may contribute significantly to global warming and cause massive changes in agriculture. All of these changes may not be negative, however. What might be a potentially beneficial result of increased atmospheric CO2 levels? Plants require CO2 for photosynthesis More plants, more photosynthesis, more oxygen Increasing the CO2 level would bring benefits to photosynthesis, which provides more oxygen for the human population PROBLEMS WITH CO2: Green house affect- the burning of fossil fuels creates elevated level of gasses in the atmosphere that prevent the light from the surface of the earth to go back out not the universe. Traps inside the atmosphere in the earth Excess CO2 affects the ocean as well and kills of corral reefs If you talk to your plants you are breathing CO2 on them which causes them to grow - SIDE NOTE
9. Most animals remain fertile until they die, including human males. Females of the human species, however, are remarkably different in having a relatively long post-reproductive period called menopause. What hypothesis might explain this paradox? Risk becomes too high once women get
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Dolphins (marine mammals) have lungs about the same size as humans, but they can dive underwater for as long as fifteen minutes without coming up for air. What adaptation might best explain this ability? Dolphins have more red blood cells which contain hemoglobin (protein) which binds with oxygen which allow dolphins to breath underwater longer
12. Blood sugar concentration in humans is regulated in a negative feedback fashion by a system of hormones and glands. In this system, the pancreas secretes the hormone insulin which causes blood sugar levels to decrease (sugar is stored in the muscles and liver), or the hormone glucagon, which causes blood sugar levels to increase (sugar is released from storage). Predict what effect eating an entire bag of cotton candy will have on the production of these two hormones. Increase production of insulin from the pancreas and the excess sugar can bev taken in and stored in the liver and muscle cells Glucagon release the sugar into the blood stream which give sugar to the

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