Problem: - The diaphragm contracts - The lungs expand - Air is pulled from outside the body, into the lungs - The membranes in the lungs collect oxygen molecules - Oxygen is transferred to red blood cells What might be the last step of the process?

A: Red blood cells distribute oxygen throughout the body

Problem: - The liver takes in blood from the rest of the body - The liver uses enzymes to clean the blood - The cleaned blood is expelled - The liver creates bile from the items filtered - The liver takes energy and stores it as glycogen What might be the last step of the process?

A: The bile is sent to the intestines.

Problem: - An isotope has too many protons - The isotope is unstable - The isotope emits radiation - The isotope decays - The isotope loses some atomic particles - The isotope turns into a different element What might be the last step of the process?

A: The isotope is finished decaying and emitting radiation.

Problem: - A butterfly starts as an egg - The egg hatches - A larva emerges - The larva eats and grows - The larva sheds its skin - The larva enters a chrysalis - The pupa grows inside the chrysalis - The adult butterfly exits the chrysalis - The adult butterfly is now fully grown What might be the last step of the process?

A:
The adult butterfly lays more eggs.