The Surface:
* Bare Rock and Dust: The surface would be devoid of any life, including plants, animals, and microorganisms. We'd see only the raw, exposed rock and the dust that would be kicked up by the constant bombardment of micrometeoroids.
* Craters Galore: Without the protective atmosphere, the Earth would be constantly bombarded by meteoroids and asteroids. The surface would be pockmarked with craters of all sizes.
* No Water: Without the biosphere, the oceans would evaporate, leaving vast, dry, salty plains. Any remaining water would be frozen in the polar ice caps.
* Extreme Temperature Swings: Without the atmosphere to moderate temperatures, the Earth would experience extreme heat during the day and extreme cold at night.
The Landscape:
* No Clouds: The sky would be a deep, dark blue, with no clouds to obscure the view of the stars. This would make the night sky incredibly bright, but also incredibly cold.
* No Color: The landscape would be mostly shades of gray and brown, with no plants to provide any splashes of color. The only color might come from the occasional volcanic eruption.
* No Sound: Without an atmosphere, there would be no sound. The Earth would be a silent, desolate place.
In Short:
Earth without the biosphere and atmosphere would be a barren, lifeless, and extremely hostile environment. It would be a far cry from the vibrant, diverse planet we know today.
It's important to remember that the biosphere and atmosphere are intimately connected. The biosphere, through processes like photosynthesis, is responsible for maintaining the composition of our atmosphere. The atmosphere, in turn, provides the conditions necessary for life to exist.
