How do people observe Earth Day today?

They go outside they plant something like there favorite plant.

Also start recycling the things in your home or in areas around you.

Explanation:

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.