A student carries out an experiment. She clears an area of soil in her backyard. She keeps the soil watered and makes careful weekly observations of the area. She uses a notebook to record data about the plant growth in the area of study. Originally she observes only worm and insect activity in the soil. After 2 weeks she notices the growth of grass and weeds in the soil. She also notices an increase in insect activity in the area. She continues her observations over a period of three months. By the end of the experiment, the soil is almost completely covered with grass and weeds. She also notices that some tree seedlings have taken root and are beginning to grow. On the final day of her observations, she notices a rabbit eating the grass. Which of the following would the student be able to analyze by looking at her collected data? A. Animal Reproduction
B. Decomposition
C. Ecological succession
D. Climax Community
**Please i need an answer for it :(**

For each of the following, mark whether it is a possible confounder (a factor that mixes up the results, making it look like candy is to blame when it's a causal (or causation) link which supports the argument that candy causes criminal behavior (ie, explains how candy leads to criminality ), or neither (an irrelevant factor, something that may cause people to become criminals but has nothing to do with eating candy). choose your answers based only< on the information given. additives in candy- additives found in candy may adversely affect brain development of young children in ways that could contribute towards adult aggression. impulsive personality-- kids who are highly impulsive and have trouble delaying gratification are more likely to eat candy every day as children and more likely to disobey laws as adults. violent abuse-- children who suffer violent abuse are more likely to become violent adults and commit violent crimes. gender- boys are overwhelmingly more likely to commit violent crimes

Asociologist wants to study a culture that occurs in some women’s prisons: “state families,” in which individual prisoners take on certain roles within a group of like-minded prisoners. there is previous evidence that younger prisoners will use older inmates who play the roles of grandparents as a resource before they will turn to staff for and advice. the lieutenant in charge of a dorm of long-term prisoners offers to gather volunteers to speak to the researcher and also offers to vouch for the integrity of the researcher. the use of this staff is: a valid use of a statistical technique referred to “snowball sampling” wherein the inclusion of the first subject leads to the recruitment of another one subject.a useful tactic in obtaining a sample of prisoners who both meet the criteria and who will be honest with the researcher.wrong and is prohibited; subject selection needs to be free from intervention by prison authorities or prisoners.acceptable only when the researcher’s irb grants a special waiver.

Which is relatively better: a score of 76 on a psychology test or a score of 22 on an economics test? scores on the psychology test have a mean of 90 and a standard deviation of 13. scores on the economics test have a mean of 52 and a standard deviation of 10.