I really need help with this ASAP

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

What is any method of measuring the age of an object or event in years, such as using atomic half-life?

How are fossils most commonly formed