<span>The geologic time scale is divided into periods, which are then divided into epochs, which are further divided into ages. For example, the time of the dinosaurs lasted 3 periods (Triassic, Jurassic, Cretaceous), each period had 3 epochs (late, early, middle), and each age fit into one of those. Many epochs have more than 1 age associated with them.
As for the basis for differentiating the eras, I'm not so sure. The only one I can say for sure is the end of the Cretaceous, which is when the dinosaurs suddenly became extinct due to a meteor impact. I think the divisions are based on significant, global-scale events that changed the world.
Sorry its so long but that the answer i think >:) ur welcome
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An adaptation that makes bipedalism possible is the need to get around. If your slithering on the ground, you could get diseases, or get hurt.
Answer:
An prokaryotic cell doesn’t have a nucleus
Explanation:
Answer:
An ionic bond is formed by transfer of electrons between metals and non-metals.
Explanation:
Ions that have opposite charges will form an ionic bond in such a way that total charge on the compound is 0.
Carbon is relatively small. non - bulky atom that shares electrons easily .
Hope this helps!!!
