Which is true of the previous mass extinctions? * (1 Point)
The rate of death has increased with each mass extinction
Only a small percentage of species died out in each mass extinction
Recovery led to a greater biodiversity following a mass extinction
O Mass extinctions occur over a long geologic time period

By water evaporation from the leaves is created a negative pressure at the top of the tree that promotes the ascension  of the water through channels that are called xylem. there are also two molecule forces that are involved: the intra-water molecules cohesion (water molecules stick to each other) and the adhesion when the water molecules stick to the channels they are running in. this is what enables water to go from the roots to the top of a tall tree.

Movement of earth’s crust creates low areas that fill with water. also streams flow into shallow areas.