malala has an unknown substance and she’s trying to find out what it is she starts her investigation by taking some of the substance and put it into water the substance disappeared why does she call the unknown substance and water?

The kansas-nebraska act allowed the territories of kansas and nebraska to decide the issue of slavery by popular sovereignty. the people who lived in these territories would be able to vote on whether slavery would be allowed there. what effect did this have on kansas? a. settlers voted to allow slavery only in half of the territory. b. kansas became a slave state and joined the confederacy. c. settlers held a series of debates to them decide. d. pro-slavery settlers fought against anti-slavery settlers.

Compare and contrast the philosophies of constitutionalism and the divine right of kings. which has the greatest impact in the formation of the us constitution?

Running and sleep. sufficient sleep is important for adolescents for both their neural and psychological development. despite this, daytıme sleepiness and poor physical and psychological functioning related to chronic sleep disturbances are common. there is a growing body of evidence that exercise is associated with both better sleep and improved psychological functioning sixty participants were recruited from a high school in northwesten switzerlandthey were randomly assigned to either a running group or a control group, 30 to each group the running group ran every moming for a little over 30 minutes on weekdays for a three-week period. all participants used a sleep log for subjective evaluation of sleep, and sleep was also objectively assessed at the beginning and end of the study using a sleep electroencephalographic device that measured quantities such as sleep efficiency and time spent in the four different sleep phases. running was found to have a positive impact on both objective and subjective measures of sleep functioning what are the explanatory variable(s) and the response variable(s)? (a) outline the design of the experiment (b) (c) here are some more details on the treatment and control groups. all participants arrived at school at 7 a. m., and the running group did two laps on the track and then ran cross countrv in groups of at least four people for 30 minutes the control group remained seated at the track, worked on horpework. and interacted with each other. when the runners returned, all participants prepared for school and ate a breaktast that was provided. iwhy do you think the experimenters had the control group arrive at 7 am interact withdassmates and have breaktast together? explain. do you think having the control eroup do these activities is important for the types of conclusion that can be reached? how?