Which best explains why mammals became dominant after the mass extinction of the dinosaurs? A) They had traits that helped them adapt to environmental changes.
B
They were larger than dinosaurs and ate different foods.
They lived in different areas on Earth than dinosaurs.
D They were able to hibernate for thousands of years.
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The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of tthe table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.