A country is seeking to develop into a manufacturing powerhouse. Which of the following will be essential to its development? 1. Transportation infrastructure
11. Stable domestic food supplies
III. Protectionist trade policies
IV. Large low-salaried workforce

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