How does polar jet stream influence the weather on the southern tip of south america?

Answer this asap. why did the americans go to china? a. trading b. exploration c. land d. live stock

Ascientist makes a map using gis. one layer is an aerial photograph of farmland. other layers show water level changes and how crop cover has changed over time. what might the scientist be studying?

Although romania possesses broad plains with fertile soils, its people a) work in citiesb) are impoverishedc) have emigrated to other nationsd) are entrepreneurs