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Which of these best describes the purpose of the Truman Doctrine? What's the center of African life in ancient and modern times?OA. CultureOB. ArtO C. FoodO D. Family Suppose we are using a three-message mutual authentication protocol, andAlice initiates contact with Bob. Suppose we wish Bob to be a stateless server, and thereforeit is inconvenient to require him to remember the challenge he sent to Alice. Lets modify theexchange so that Alice sends the challenge back to Bob, along with the encrypted challenge. So the protocol is:Step 1: Alice send a message [Im Alice] to Bob. Step 2: Bob sends a random number, R. Step 3: Alice sends a message [R,KAliceBob{R}]. Is this protocol secure? Find the size of angle x. 65 X 35 A sample of iron was determined to have a mass of 27.3162g and a volume of 3.475 cm. What is the density of the iron sample? There were 235 homicide deaths in Sacramento, CA in 2011. Theestimated mid-year population was 25,000 in 2011. How manyhomicides deaths per 100,000 of the population occurred inSacramento in 2011? Eco-conscious travelers can now seek to reduce their carbon footprint by buying offsets. Air travelers, for example, are now asked if they wish to purchase offsets when they buy their ticket. The most simplistic example of an offset is planting a tree, known as REDD+ credits which are issued for preventing deforestation in areas where forests are under imminent threat. Is this a complement or substitute for a national climate change policy? Why? Discuss. a printer makes more than three copies of labels every hour graph the number of books made in 2 hours. Over time, Lizabeth realizes that Miss Lottie planted the marigolds in order to...add beauty to her life.gift them to her neighbors.sell them and make money.teach the children how to garden Explain the connections between each of the factors of history, psychology, politics, economics, sociology, anthropology and science to each other such factor in terms of the ability and inability to meet the six dietary principles. A pet groomer gave 9 baths, 15 nail trims, 8 brush-outs, and 5ear cleanings.For every 5nail trims, the groomer gave 3. These tribes lived in the Great Basin,Group of answer choicesPaiute, Shoshone, and UteShoshone, Chumash, and UteComanche, Ute, PaiutePaiute, Shoshone, and Arapaho I Most of the oxygen in our atmosphere comesfrom processes carried out(3) in factories(4) by plants(1) in the soil(2) by animals Probability of getting tens? 13. The leaves of plants help it to make food by the process of photosynthesis. Plants perform photosynthesis in the presence of sunlight. What other components are needed by the plants to undergo photosynthesis? O(a)Oxygen and water O (b)Carbon dioxide and water O (c) Carbon dioxide and oxygen O (d)Oxygen and Carbon monoxide PLSSSS HELP IF YOU TURLY KNOW THISSS The acoustic impedance of each tissue differs', do you agreewith this statement? Provide supportive argument for your agreementor disagreement to this statement. CEREAL A company claims that its boxes of cereal contain 19.1 ounces ofcereal. The actual amount of cereal in the box can be within 0.5 ounce of theadvertised amount. What is the range of possible amounts of cereal c in a box? Select all the equations that are equovalent to 52= -4 (2n +1) Judy bought 1 pound 6 ounces of almonds, 2 pounds 3 ounces of walnuts, and 8 ounces of cashews. What was the total weight of the nuts (in pounds and ounces)?