Examlex
The _____ is the Earth's primary source of energy.
Technophobia
The fear or aversion to new technology, often stemming from a lack of understanding or fear of change.
Mesozoic
An era of geologic time from about 252 to 66 million years ago, known as the age of reptiles, including dinosaurs.
Cenozoic
The current geological era, beginning 66 million years ago and characterized by the dominance of mammals on Earth.
Precambrian
The earliest part of Earth's history, spanning the time from the formation of the Earth to the start of the Cambrian period, about 4.6 billion to 541 million years ago.
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