What planet has no moon and a dense atmosphere

Mercury has no moons and hardly any atmosphere because of because of this temperatures are about 800 degrees to -300

Mercury... it has no moon and practically no atmosphere because of the temperatures

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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.

which

what is a measurement of the earth’s history divided into time periods?

> fossil record <

sedimentary rock

> geologic time scale <

radioactive elements