4. To see how participants responded to questions about the presence of a gun immediately after the theft (on day one), campus security asked the participant how likely it was that
the thief had a gun immediately after the incident. The experiment then proceeded as
usual, with participants in either the experimental or control group. The next day (day
two), the police detective also asked about whether the participant saw a gun. Data
analysis showed that participants' answers about the likelihood that the thief had a gun
became more extreme on follow-up questioning by the police detective. That is,
regardless of whether they were in the control or experimental condition, participants
who reported that the thief had a gun on day one were convinced he had a gun on day
two. That is, the mean score that a gun was present was similar for the experimental
group (M=65%, SD = 11.4%) and the control group (M=63%, SD = 13.26%).
a. Maturation
b. Regression to the mean
c. Selection
d. Mortality
e. Instrumentation
f Testing
g. History
h. Interactions
i. Diffusion
j. No Threat

Rease is an enzyme used by plants to break down urea (a nitrogen-containing compound) into carbon dioxide and ammonia. urease urea > > > carbon dioxide and ammonia ammonia is broken down by plants into a nitrogen source plants need to grow. thus, plants could not use urea as a nitrogen source unless it was first converted to ammonia. in soybean plants there are two different kinds of urease, one produced in the seeds and the other produced in the leaves of the plant. three types of soybean plants were used in a set of experiments: normal soybeans and two mutant strains, one lacking the urease in the seeds only (strain 1) and one lacking urease in the leaves only (strain 2). experiment 1 separate areas in a field were planted with normal, strain 1, and strain 2 soybeans. all types of soybeans appeared to grow, flower, and produce seeds equally well. there were no externally detectable differences among the strains. experiment 2 small pieces of plant leaves of equal weight were obtained from each type of soybean plant and separately placed on media in culture dishes. tissue growing in this way will become an unorganized clump of cells referred to as callus. to provide a controlled nitrogen source, half the tissue samples of each type were placed on media containing urea, and the other half of the samples were placed on media containing ammonia. after 30 days, the weight gain for each of the callus samples was determined. results are shown in the table below.

At which point is crust neither created nor destroyed? island chain mid-ocean ridge divergent boundary transform boundary

Which of the following best explains the changes in biodiversity shown in the graph?