Combination bar and line graph showing trends in U. S. population growth and withdrawals of fresh groundwater from 1950 to 2000. The population of the United States is approximately 150 million in 1950, approximately 180 million in 1960, approximately 205 million in 1970, approximately 230 million in 1980, approximately 252 million in 1990, and approximately 285 million in 2000. Between 1950 and 1980, withdrawals of fresh groundwater increased steadily from approximately 34 billion gallons per day in 1950 to approximately 83 billion gallons per day in 1980. This figure fell to approximately 73.2 billion gallons per day in 1985, then rose to approximately 79.4 billion gallons per day in 1990, then fell to approximately 76.4 billion gallons per day in 1995, then rose to approximately 83.3 billion gallons per day in 2000. Which of the following is a conclusion you could draw from the graph? From 1950 to 2000, groundwater withdrawal increased steadily. As population increases, groundwater withdrawals decrease. Fluctuations in groundwater withdrawals are not in response to increases in population growth. Increased population demands increase groundwater withdrawals every year regardless of precipitation.

Each autumn the forest floor is covered by leaves that have fallen from trees which type of organisms is most effective in decomposing the leaf tissue allowing the nutrients and minerals to be recycled in the environment?

(adapted from m. m. duguid and j. a. goncalo, living large: the powerful overestimate their own height. ) in a study of power and self-image, participants were not told the true purpose of the study; instead, they believed they were participating in a business simulation. researchers randomly assigned participants to a high power(n = 44) or low-power (n = 44) condition. in the high-power condition, participants recalled a time when they had power over others, and in the low-power condition, they recalled a time when others had power over them. participants were asked to adjust the height (in centimeters) of an electronic graphical image (an avatar)of themselves to reflect their personal appearance. results indicated a statistically significant difference in participants’ perceptions of their own height across the two conditions. participants in the high-power condition created taller self-images (mean = 6.0, standard deviation = 1.5) than participants in the low-power condition(mean = 4.0, standard deviation = 1.0). * describe independent variable- describe how researchers measured the independent variable- explain why the researchers can conclude that there is a cause-and-effect relationship between the independent and dependent variables. - explain what statistical significance means in the context of the study.- explain why debriefing would be necessary in the study. -

Fill in the a is a social institution that undertakes the distribution of power, determining goals, and making choices for society.