Answer:
group two elements are called alkaline earth metals
Explanation:
Because their oxides form in the earth and are water soluble
Answer:
2MnO2 + H2O => Mn2O3 + 2OH is the correct balanced equation.
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Darwin observed the beaks of the birds and how the different beaks helped the birds to eat different types of seeds.
This relates to natural selection because certain finches with say a smaller shorter beak would be able to eat only smaller seeds and fruits as to where a finch with a longer larger beak could eat larger bigger seeds and fruits.
Hope this helped! Have a great day!
