what three major ethnicities have accounted for the large numbers of immigrants in the U. S. indicated in the 1820-1880

Indicates a bal of .05 or higher. a. loss of judgment b. altered mood c. weakened vision d. having trouble steering

  usually, loads of more than pounds require the assistance of a second person.           a. 40   b. 20   c. 50   d. 30

Without stratospheric ozone, which of the following would most likely occur? i. smog over major cities would be greatly reduced. ii. farms would produce surplus crops because of increased photosynthesis. iii. uv radiation would damage phytoplankton and reduce populations of aquatic consumers. i only ii only iii only i and ii i and iii