Cual es el bioelemento mas importante de cada categoría (primarios, secundarios, oligoelementos) y el porque porfaa

Ausable water source is one that can be used by humans for drinking or agriculture. identify the water reservoirs as usable or unusable based on their current state. oceans rivers glaciers freshwater lakes groundwater

Contrast how pollination is different among gymnosperms and angiosperms.

Quick asap will give brainiest ! what best describes the same pattern of tides on earth throughout the day? neap tides spring tides semidiurnal tides nocturnal tides