You used blank to inderiectly find the blank of the objects

An atom of nitrogen had seven protons in its nucleus. how many electrons does it have

Types of scientific inquiry that biologist engage in that cannot be completely controlled

Adrought killed all the plants in an agricultural farmland. gradually, due to wind and some birds for. nearby areas, new plants started sprouting l. what stage of succession was taking place in the farmland? a) competition b) nudation c) ecesis d) reaction e) migration