Help please and thank you

In the family tree below, people with the recessive trait of attached earlobes are shaded gray.

What happens when a magniseum ion ia atracked to a chlrene ion

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