Why is photochemical smog more likely to be found in industrialized nations than gray-air smog

  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

Which association ensures quality education for children up to 8 years of age? a. chip b. naeyc c. snap d. wic