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\begin{tabular}{|l|l|}
\hline \multicolumn{1}{|c|}{ Planet A } & \multicolumn{1}{|c|}{ Planet B } \\
\hline \begin{tabular}{l}
Atmosphere is mostly \\
carbon dioxide.
\end{tabular} & \begin{tabular}{l}
Atmosphere is \\
rich in oxygen.
\end{tabular} \\
\hline Surface is red. & \begin{tabular}{l}
Surface has \\
liquid water.
\end{tabular} \\
\hline It has a few clouds. & \begin{tabular}{l}
It has many \\
clouds.
\end{tabular} \\
\hline
\end{tabular}

Sagot :

GinnyAnsweridn
To identify the planets based on the given characteristics, let's analyze each planet's traits step by step:

### Characteristics of Planet A:
1. Atmosphere: The atmosphere is mostly composed of carbon dioxide.
2. Surface: The surface is red.
3. Cloud Coverage: It has a few clouds.

### Characteristics of Planet B:
1. Atmosphere: The atmosphere is rich in oxygen.
2. Surface: The surface has liquid water.
3. Cloud Coverage: It has many clouds.

Now, let's match these characteristics to known planets in our solar system.

#### Analysis of Planet A:
1. Atmosphere:
- A planet with an atmosphere largely composed of carbon dioxide is Mars. In fact, Mars' atmosphere is over 95% carbon dioxide.
2. Surface:
- Mars is famously known as the "Red Planet" due to its reddish appearance, which is caused by iron oxide (rust) on its surface.
3. Cloud Coverage:
- Mars has a thin atmosphere, resulting in few clouds comparatively.

### Conclusion for Planet A:
Given these characteristics (carbon dioxide atmosphere, red surface, few clouds), Planet A is identified as Mars.

#### Analysis of Planet B:
1. Atmosphere:
- A planet with an atmosphere rich in oxygen is Earth. Earth's atmosphere is composed of approximately 21% oxygen.
2. Surface:
- Earth is the only known planet with extensive liquid water on its surface, covering about 71% of the planet.
3. Cloud Coverage:
- Earth has a dynamic atmosphere with significant cloud coverage due to the water cycle.

### Conclusion for Planet B:
Given these characteristics (oxygen-rich atmosphere, liquid water on the surface, many clouds), Planet B is identified as Earth.

### Final Identification:
- Planet A is Mars.
- Planet B is Earth.

This step-by-step analysis concludes that Planet A matches Mars, and Planet B matches Earth based on their given atmospheric composition, surface features, and cloud coverage.
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