Does the model correctly represent the electron dot diagram of magnesium? why or why not? check all that apply.
-yes, because the chemical symbol of magnesium is mg.
-no, because the chemical symbol of magnesium is mn.
-yes, because magnesium has two valence electrons.
-no, because magnesium has seven valence electrons.
-no, because both of the dots should be on top of the chemical symbol.

Yes, because the chemical symbol of magnesium is Mg.

Yes, because magnesium has two valence electrons.

Explanation:

self explanitory

many phylogenetic trees have a single lineage at the base representing a common ancestor. a lineage that evolved early from the root and remains unbranched is called basal taxon. when two lineages stem from the same branch point, they are called sister taxa.

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explanation:

the correct answer is:

a population changes in response to a change in the environment.