The correct option is (a) 1 only.
Explanation
The Earth is characterized as a dynamic planetary system rather than a static body. This dynamism is defined by continuous interactions between endogenic forces (originating from the Earth's interior) and exogenic forces (operating on the surface).
Statement-wise Analysis:
- Statement 1 is Correct: The Earth is a dynamic planet because it constantly undergoes changes. Internally, heat from the core and mantle drives processes like plate tectonics, volcanism, and earthquakes. Externally, solar energy drives atmospheric circulation, the hydrological cycle, and weathering processes that reshape the surface.
- Statement 2 is Incorrect: Describing the Earth as a static planet with no changes is factually wrong. The Earth has been evolving since its formation and continues to change due to the continuous operation of internal and external forces.
Key Takeaway:
The Earth is a dynamic planet subject to constant evolution through endogenic (internal) and exogenic (external) geomorphic processes.