How are observational studies of populations different from experimental studies? What can be learned from observational population studies?

Alan read the following information on the NASA website while researching for a report on Mars.NASAs senior Mars rover, Opportunity, is examining rocks at the edge of Endeavour Crater for signs that they may have been either transported by a flood or eroded in place by wind.Those scenarios are among the possible explanations rover-team scientists are considering for features seen just outside the crater rims crest above Perseverance Valley, which is carved into the inner slope of the rim.The team plans to drive Opportunity down Perseverance Valley after completing a walkabout survey of the area above it. The rovers drives now use steering motors on only the rear wheels, following a temporary jam of the left-front wheels steering actuator this month. Opportunity has not used its right-front wheels steering actuator since 2005, the year after it landed on Mars.The mission has been investigating sites on and near the western rim of Endeavour Crater since 2011. The crater is about 14 miles (22 kilometers) across.Source:https://www.nasa.gov/feature/jpl/mars-rover-opportunity-on-walkabout-near-rimWhich of the following is the best way for Alan to accurately paraphrase this information?Select one:NASAs Mars rover, Opportunity, is exploring different sites to help scientists on Earth learn more about Mars.According to NASA,perseverance Valley is part of the inner slope of the western rim of Endeavour Crater, which is on Mars."Opportunity is exploring Endeavour Crater and Perseverance Valley, using its rear wheels only." Using the formula m= f(x2) - f(x1)/x2 - x1, what is the rate of change for the linear function that contains thepoints (-3, 2) and (1,10)?1/28-42 (Please help!!) Solve: x2+6x+9 Please help!!!!!!!!!! !! Mother's Day poem with two stanzas Mrs. Clements has a table with a top that is shaped like the trapezoid shown. Which expression can Mrs. Clements use to find the area of the table top, in square feet? A (5x3x4) + (4x2) C (4 3 5) 1 12(2 3 4) B (9 3 4) 1 (4 3 5) D (4 3 9) 1 12(5 3 4) 5 feet 4 feet 2 feet 9 feet Complete the sentences to describe the function f(x) = 2x^2+16x/16x^3-x the function is discontinus at Why might the United States send military aid to countries that are controlled by military dictators?to help dictators stop riots and protests against themto achieve a greater purpose, such as stopping a larger enemyto allow dictators to gain power and controlto influence dictators to step down and embrace democracy There are 26 gold fish in the tank at the store. How many ways can Ben choose five? PLEASE HELP ILL GIVE BRAINLIEST !!! 100 POINTS !! NO FAKE ANSWERS ! What is the significance of the Valley of the Ashes? What images does Fitzgerald use to describe the landscape? How does the setting seem to affect the people who live there? There is a remarkable contrast in the atmosphere of the valley of the ashes with the atmosphere of West Egg and East Egg as well as that of Manhattan. List the first 5 multiples of 6.* Five years ago, you invested in the Future Investco Mutual Fund by purchasing shares of the fund at the price of per share. Because you did not need the income, you elected to reinvest all dividends and capital gains distributions. Today, you sell your shares in this fund for $ per share. If there were a % load on this fund, what would your rate of return be? Teresa Alice drove 383.5 miles in 6.5 hours. What is her average rate of speed? Answer now boi/gurl, Tahke yuo on a scale of 1 to 5 with one being great and 5 being not get it off how would you rate President Nixon in his early stage( 2-4 sentences) WILL GIVE BRAINLIEST ANSWER list two of three places where a student can learn about apprenticeship opportunities anthony went on a bike ride. He rode two-thirds of a mile in three-fourths of an hour. What was his biking speed in miles per hour? blank and blank are examples of phenotype Help asap please Tirado hired a Belle Glade company to perform regular maintenance on his boats. The amountTirado pays can be modeled by the equation y = 50x + 1850, where y represents the total costand x represents the number of boats serviced. Which of the following is the correctinterpretation of the slope in the context of this problem?A. The discount Tirado earns for each boat serviced.B. The amount Tirado pays for each boat serviced.C. The number of boats Tirado has.D. The one-time fee Tirado pays for the service.