Examlex
What territory did Charlemagne use as a base south of the Pyrenees to launch crusades to reconquer Spain?
Topsoil
The uppermost layer of soil that is rich in organic matter and nutrients, used extensively for cultivation and planting.
Photosynthesis
The process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water, releasing oxygen as a byproduct.
Topsoil
The uppermost layer of soil, which is rich in organic matter and nutrients, crucial for plant growth.
Deserts
Arid regions with extremely low rainfall, characterized by scarce vegetation and diverse adaptations among the organisms that inhabit them.
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