Explanation:
Earth is the only known planet in our solar system that has an atmosphere containing a significant amount of oxygen and oceans of water on its surface. It is also the only planet where life as we know it exists. Earth's unique combination of atmosphere, water, and distance from the sun make it the perfect environment for life to thrive.

Atmosphere:
Earth's atmosphere is composed of several gases, with oxygen being the second most abundant after nitrogen. This oxygen-rich atmosphere allows for the existence of aerobic organisms, which require oxygen to survive and carry out their metabolic processes.

Oceans of Water:
Earth is often referred to as the "Blue Planet" because of its vast oceans of water covering about 71% of its surface. These oceans play a crucial role in regulating the planet's climate, absorbing and releasing heat, and providing habitats for a wide variety of marine life.

Distance from the Sun:
Earth is located at the third place from the Sun in our solar system. The order of planets from the Sun, starting with the closest, is as follows:

1. Mercury
2. Venus
3. Earth
4. Mars
5. Jupiter
6. Saturn
7. Uranus
8. Neptune

Earth's distance from the Sun is what allows it to maintain a habitable temperature range. If it were too close, like Mercury or Venus, the extreme heat would make it impossible for liquid water and life to exist. On the other hand, if it were too far, like Mars or the gas giants, the temperatures would be too cold for liquid water and the atmosphere would be inhospitable.

In conclusion, Earth is the only planet in our solar system known to have an atmosphere containing oxygen and oceans of water on its surface. It is located at the third position from the Sun, which provides the perfect conditions for life to flourish.