Which of the following actions by farmers contributes to desertification?

rotating crops
allowing farm equipment to rust in the fields
planting windbreaks and practicing contour farming
abandoning overused farmland without replenishment

Please help thank you Simplify the expression.21 + 49 divided by 7 + 1 What type of heat transfer occurs when warm ocean water from the equator moves up towards the poles and cold ocean water from the poles moves down towards the equator?A. Thermal InsulationB. ConductionC. ConvectionD. Radiation Which two terms can be combined in this expression?6 + 3.2 m + two-fifths n minus StartFraction m over 5 EndFraction6 and 3.2 m3.2 m and Negative StartFraction m over 5 EndFractionTwo-fifths n and Negative StartFraction m over 5 EndFraction6 and Negative StartFraction m over 5 EndFraction solve the inequality and graph the solution on the line provided. so they deleted my vibe page anyone else wana vibe also what is 23 x 14that way i dont get deleted 7. Write an equation of the line that passes through the points (1, 4) and (-2, 10), in point-slope form. PLEASE HELP there are 3 questions i need you to answer! (REMEBER TO LOOK AT THE OTHER PHOTOS! THERE ARE 3)TYSM!! What was one outcome of the Georgia legislature's refusal to seat Henry McNeal Turner?A. It showed that the Democratic Party did not fear federal intervention in the state's affairs.B. It symbolized the Republican Party's reluctance to work with the Freedmen's Bureau.C.It sent a message that while African Americans could vote, they could not serve in political office.D. It caused many African Americans to shift their support from the Republican Party to the Democratic Party Which of the following reactions is an example of a single replacement reaction?Select one:a. H2 + O2 --> H2Ob. CH4 + O2 --> CO2 + H2Oc. NaI + Br2 --> NaBr + I2d. H2CO3 --> H2O + CO2 Dana is planning to drive 400 miles fromNew York to Boston and back. Dana'shybrid car can travel 50 miles on 1 gallonof fuel. Biodiesel fuel costs $4.45 pergallon.Part A: How many gallons of fuel doesDana need to purchase for the 400-miletrip? Explain your reasoning.Part B: Dana can take a high-speed trainto Boston instead of driving. A round-triptrain ticket costs $95. Is it cheaper forDana to take the train or to drive? Howmuch cheaper? Explain your reasoning. 15. Which of the following is a valid explanation for why people producesynthetic materials?A. Synthetic materials always biodegrade easily.B. Synthetic materials do not require any natural resources to produce.C. Synthetic materials are less artificial than natural resources.D. Synthetic materials help meet societal demand for materials that are inshort supply in nature. A group of friends hiked 7 miles in 2 hours at this same rate what is the total number of miles they can hike in 8 hours Determine the mass of oxygen that is needed to react with 33 grams of phosphorus.4P + 5 O2 2 P205A27.3 grams O2B1.33 grams O2213 grams 02D42.6 grams 02 When pointing out specific instances you should alsoa. identify significant exceptionsb. identify the important peoplec. avoid discussing the number of specific instancesd. appeal to the audience's emotions Find the percent of change. Round to the nearest tenth, if necessary.There were 795 runners registered for the marathon in 2015 and 1,208 in 2016.PLLLLLEEEEEEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAASSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSEWEEEEEEEEEEEEEEEEEEEEEEEE what is the y-intercept? B = Which factor can help balance Earths temperature? Suppose the fishing spot where kimi Werner goes spear fishing has an area of 946 square yards .If the fishing spot is 43 yards long, how wide is the fishing spot what does paragraph 52 reveal about griffin's influence on the schoolchildren