Q: - Plants start growing on or near the rocks - The roots of the growing plants start to break up the rock - The plant acids dissolve the rock - The rock is broken down into smaller pieces What might be the last step of the process?
A: Erosion begins.

Q: - A larva is born - The caterpillar eats constantly until it grows bigger - The caterpillar starts to form a cocoon around itself - The caterpillar becomes a pupa - After some time the cocoon hatches What might be the last step of the process?
A: And a butterfly is born.

Q: - Salt water is contained in a factory or plant - The water is boiled to a very high tempature - The salt becomes seperated from the water - The salt is removed What might be the last step of the process?
A: The water is able to be drank at this point.

Q: - The human body takes a breath inward - Air is transported to the lungs - Air reaches the alveoli, the smallest air sacs in the lungs - In the alveoli, air passes into the blood within small capillaries - The gaseous oxygen in the air dissolves into the capillary blood - The dissolved oxygen is picked-up by red blood cells - The red blood cells bind the oxygen via a protein called heme - Red blood cells circulate throughout the body and reach the various tissues - Within small capillaries, the heme release the oxygen What might be the last step of the process?
A:
The oxygen can then reach the cells within the tissue