Explain how diffusion is used to support the life processes of animals. Your answer should include two named substances and two different areas of the body. Please help.

Non polar molecules pass through cells plasma membrane. Oxygen will diffuse into a cell for respiration. The CO2, waste product will diffuse outside the cell according to the concentration gradient.

So required oxygen is supplied to the cells as we breathe in and waste carbon dioxide is exhaled.

Millions of alveoli and blood capillaries facilitate this life giving exchange.
Once in the capillaries oxygenated cells circulate to entire body. Deoxygenated cells diffuse out as they return to the lung circulatory/respiratory system.

The scientific method is a series of steps followed by scientific investigators to answer specific questions about the natural world. it involves making observations, formulating a hypothesis, and conducting scientific experiments.the steps of the scientific method are •observation-the first step of the scientific method involves making an observation about something that interests you•question-once you've made your observation, you must formulate a question about what you have observed. •hypothesis-once you've made your observation, you must formulate a question about what you have observed. •experiment-once you've developed a hypothesis, you must design and conduct an experiment that will test it.•results-the results are where you report what happened in the experiment. •conclusion-the final step of the scientific method is developing a conclusion.i hope that this you : )