Which is the most likely to an introduced species become invasive

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

Why did rutherford say that bombarding atoms with particles was like "playing with marbles" what

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