- Skin is cut or damaged - Bacteria enters through the wound - The bacteria reproduces and spreads - Causes symptoms What might be the last step of the process?
Ans: The bacteria is either fought off or becomes a disease.

- The bird picks a tree - The bird collects twigs and other refuse - The bird makes a flat base with twigs - The bird makes sides with twigs and other things - The bird adds softer material to the inside What might be the last step of the process?
Ans: The nest is done.

- You plant vegetable seeds in the ground - You water the seeds - You wait for the seeds to sprout - You keep the area free of pests and weeds while the plants grow - You thin out the plants as they get bigger to give them space to grow What might be the last step of the process?
Ans: You remove the vegetables from the plants when they are ripe.

- Kidneys filter waste out of blood - Composition of blood is regulated - Volume of water in blood is kept constant - PH is kept at a constant level - Kidneys help regulate blood pressure - Kidneys stimulate the making of red blood cells What might be the last step of the process?
Ans: Calcium levels are maintained.