The hormone leptin regulates food intake and body weight. It can cross the blood-brain barrier.[1] Which proprieties of leptin allow it to cross the blood-brain barrier? How does leptin regulate energy balance?[2] Search PubMed (www.pubmed.gov) for blood-brain barrier and leptin and select TWO original research articles about leptin. Summarize the results of these articles.Be detailed in your explanation and support your answer with facts from your textbook, research, and articles from scholarly journals. In addition, remember to add references in APA format to your posts to avoid plagiarism.

Do you believe that the United States should commit to the Paris Agreement? What arguments most influenced your decision?Do you believe that we will experience significant global warming during this century due to air pollution? In what way would the Paris Agreement impact your position on global warming?What is the effect of global warming on the Earth's water resources?Your paper should be 2-3 pages in length and all citations must use APA formatting. Please refer to the Course Project overview for a list of all requirements for this paper.

Build Your Own Weather StationFor this week's lab, you will build a backyard weather station that you will use to collect at least five days' worth of measurements (see Module 7 lab). The instructions for building most of the weather instruments are located here: https://www.wikihow.com/Make-Weather-Instruments (Links to an external site.) and https://inventorsoftomorrow.com/2018/01/22/diy-weather-station-for-kids/ (Links to an external site.) Directions for a do-it-yourself thermometer are found here: https://www.scientificamerican.com/article/measure-up-with-a-homemade-thermometer/ (Links to an external site.). Following the instructions provided, construct a barometer and a thermometer, along with at least one of the other four possible instruments (hygrometer, wind vane, anemometer, rain gauge). When constructing your thermometer, please complete the calibration step, which will require a store-bought one (listed as optional in the instructions).Take a digital photograph of each instrument that you construct. Include in your photo a strip of paper with your name and the date on it. These photographs will be part of your lab report for this week.In addition to the weather instrument photos, for your Week Six Lab Report, submit a short essay covering every weather instrument in turn: thermometer, hygrometer, barometer, wind vane, anemometer, rain gauge (even the ones you did not build).For each one, provide a brief history behind it; discuss what it measures; explain how your instrument works; and explain what information it provides about current and potential future weather conditions. Follow APA formatting guidelines, according to the CSU Global Writing Center (Links to an external site.) for the title and sources cited.