Dinosaurs were divided into two orders based on whether they were ectothermic or endothermic.
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The has only been one supercontinent throughout Earth’s hist…
The has only been one supercontinent throughout Earth’s history.
As _____________ and ______________ separated, the Gulf of M…
As _____________ and ______________ separated, the Gulf of Mexico began to form.
____________ and ____________ are the two primary components…
____________ and ____________ are the two primary components of Earth’s current atmosphere.
Throughout Earth’s history, the composition of the atmospher…
Throughout Earth’s history, the composition of the atmosphere has changed.
Most continents contain large central areas in which very an…
Most continents contain large central areas in which very ancient rocks are exposed. These areas are called ____.
A tetrapod is a(n) ____.
A tetrapod is a(n) ____.
The mantle is primarily composed of __________.
The mantle is primarily composed of __________.
Almost all species of bony fish today are ray-finned fish.
Almost all species of bony fish today are ray-finned fish.
The single, worldwide ocean that surrounded Pangaea was call…
The single, worldwide ocean that surrounded Pangaea was called: