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• why is the sky orange and red at sunrise and sunset? gases absorb orange and red light. blue wavelengths are absorbed by the atmosphere. the thick atmosphere scatters all but longer wavelengths. only short wavelengths are radiated from the sun in the morning and evening.
  
• which friend is experiencing an internal barrier to physical fitness? mark lacks access to fitness equipment. tyler has trouble finding a safe area to work out. talia puts in only 50 percent of effort during her workout. clark’s parents fail to support his desire to work out.
  
• the way you want to spend your time, money, and resources in the future are your _____.
  
• read this additional information about the costs and benefits of healthy lunch programs, and identify the pros and cons that are discussed. decision: change the school lunch program to include healthy foods you have done some additional research. you learned that schools with healthy lunch programs have lower rates of childhood obesity and diabetes than schools without such programs. these same students also performed better in academics and sports. you also learned that maintaining the freshness of food is difficult. produce often spoils or is damaged in transport. also, schools lack the adequate space needed to store fresh ingredients. identify whether each is a cost or a benefit. spoiled food damaged food better athletics better academics less diabetes lower obesity suitable storage
  
• argon is a noble gas. how many electrons would you expect an atom of argon to have in its outer shell?
  
• the degree to which the surface of an object seems to have a particular feel is referred to as an object’s _____________. a. tone c. tactility b. depth d. texture please select the best answer from the choices provided a b c d
  
• as a result of the adams-onís treaty, the united states extended its border. spain gained control of florida. britain gave texas to the united states. spain gained control of the oregon country.
  
• which statement describes how the van allen belts are formed? when low-energy particles from the sun bounce off earth’s magnetic field when high-energy particles from the sun bounce off earth’s magnetic field when low-energy particles from the sun are trapped by earth’s magnetic field when high-energy particles from the sun are trapped by earth’s magnetic field
  
• how did president eisenhower's response to communism differ from that of president truman?
  
• the area, a, of an ellipse can be determined using the formula a = πxy, where x and y are half the lengths of the largest and smallest diameters of the ellipse.