Q: - A person takes in oxygen through their nose or mouth - The oxygen travels into the body - Breaks down into glucose - Carbon dioxide is produced by the glucose breakdown What might be the last step of the process?
A: The carbon dioxide is exhaled out of the body through the nose or mouth.

Q: - Someone is infected with bacteria - That bacteria begins to grow and reproduce inside the cells - The dividing bacteria begin to make toxins - Those toxins damage your cells What might be the last step of the process?
A: Disease symptoms may begin.

Q: - Water seeps into rocks - The water freezes and thaws - Cracks form in the rocks - Cracks also form when rocks heat up What might be the last step of the process?
A: The rocks slowly break down.

Q: - A bird picks a spot high spot, often in a tree - The bird collects bits of sticks and grass - The sticks and grasses are placed between support branches - Leaves, mud and spider webs are added to the sticks - The mud, leaves and webs glue the sticks together What might be the last step of the process?
A:
The solid nest supports the eggs