Examlex
What astronomical object is the most important source for determining the age of our Solar System?
Reptiles
Vertebrates characterized by dry skin with horny scales and adaptations for terrestrial reproduction; include turtles, snakes, and alligators; reptiles are a paraphyletic group unless birds are included.
Eons
The largest division of geological time, comprising multiple eras, and spanning hundreds of millions to billions of years, marking significant changes in the Earth's geology and biological history.
Geologic Timescale
A system of chronological dating that relates geological strata to time, used by geologists to describe the timing and relationships of events that have occurred throughout Earth's history.
Devonian Period
refers to a period in the Paleozoic Era, approximately 419.2 to 358.9 million years ago, known for significant diversification of life, especially in marine environments.
Q1: The most important idea in Copernicus' De
Q4: How does gravity explain the presence of
Q6: How would you explain to your friend,
Q23: Which is a characteristic of dwarf planets?<br>A)
Q26: Pythagoras believed that the underlying rules to
Q39: One of the first tests of the
Q44: The pink color of the chromosphere is
Q49: If plate tectonics is what builds up
Q68: The force between charged particles is called
Q71: Which was the source of lava during