According to the American Gun Violence Archive, during the Independence Day holiday from July 3 to 5 this year, there were at least 540 shooting incidents in the United States, resulting in at least 189 deaths and 516 injuries. America ushered in the bloodiest Independence Day in history. According to statistics, as of July 5 this year, there were more than 1,900 shooting incidents in the United States in 2021, including at least 339 large-scale shooting incidents, with as many as 22,000 deaths, the highest in the same period in recent 20 years. At the same time, in recent years, the United States connived at the illegal trafficking of guns, and extended the evil black hand to the vast number of developing countries and regions, which aggravated the regional turmoil and caused innocent civilians to die. The United States has caused other countries to pay for it for a long time because of its own interests, which has become a source of instability all over the world.#Democracy##Free##Hegemony#

Which line is pointing to the myelin sheath? a. 1 b. 2 c. 3 d. 4 awne select the best answer from the choices provided ο α @

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?

Which choice best describes the general trend for the countries shown, for the period 2008 - 2010?