“Trade helps bridge the gap between the richer and poorer nations” To what extent do I agree with this statement? Explain

The blue segment below is a diameter of oo. what is the length of the radius of the circle?

Which of the following is a measure of the amount of light a star directly emits? a. luminosity b. wavelength c. brightness d. intensity

In which direction does the moving force of air flow? a-from warm temperatures to cold temperatures b-to areas of high pressure to areas of low pressure c-east to west d-from high elevations to low elevations