How quickly would groundwater flow through rock with high porosity and high permeability

Which of these statements best describes the st. lawrence seaway? the st. lawrence seaway connects the st. lawrence river with the arctic ocean. the st. lawrence seaway provides an important trading route between the u.s. and mexico. the st. lawrence seaway provides an important trading route for the u.s, but has little value for canada. the st. lawrence seaway connects the great lakes, the st. lawrence river, and the atlantic ocean.

In what for do plants utilize nitrogen? why do they need nitrogen?

Contrast how pollination is different among gymnosperms and angiosperms.