meadow
Through succession.
they become more complex and specialized
John Hanson was the succession to become the president.
Ferrets would need webbed feet to become semi-aquatic like the mink
Succession
Since fish are cold blooded animals they won't be able to handle the temperature of warm water. Eventually they'll die.
evaporation: apex
The Vice President is next in the order of succession.
the raindrop falls into a natural spring, then you drink natural spring water at lunch, and then you use the bathroom and it goes through sewage into a body of water which is then evaporated into a cloud.
particles in the air slow it down and cause it to stop eventually
Because the germs spread into the blood stream, carrying it through your body, which eventually causes you to become sick.
Donnacona became a chief through a combination of hereditary succession, demonstrating leadership qualities, and being recognized by his community for his skills, wisdom, and abilities to guide and protect his people.