How how can earth layers be defined select the correct two answers
The correct answers are:
1. By their physical properties: The Earth's layers can be defined based on their physical properties such as density, composition, and temperature. These properties determine the behavior and characteristics of each layer.
2. By their chemical composition: The Earth's layers can also be defined based on their chemical composition. The three main layers, the crust, mantle, and core, have different compositions and elements that make up their structure.