Examlex
Which of the following is considered to be the first major development in hominin evolution?
Ozone
A molecule composed of three oxygen atoms, known for its presence in the Earth's stratosphere, where it forms a layer that protects life by blocking most of the sun's harmful ultraviolet radiation.
Undecomposed Leaves
Leaves that have fallen from trees but have not yet broken down or decomposed, often accumulating on the forest floor.
Crop Waste
Residue from agricultural operations left in the field or created as a by-product, which can be utilized for various purposes including energy production.
Hardwood Trees
Trees that have broad leaves, typically grow slower, and have denser wood compared to softwood trees, often used in furniture and flooring.
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