The medium ground finch lives on the galapagos islands. birds with beaks of all sizes were originally part of this population. the finches are seed eaters. the types of food available for them to eat depends on the weather. during wet years, there is a large variety of food. during dry years, there is less food, and large, tough seeds are more abundant than small seeds.

after a long drought, researchers noticed certain differences in the population of medium ground finches living compared to those who lived before the drought. what was different about the finches after the drought?
a.
they had smaller beaks.
b.
they were a new species.
c.
they were smaller.
d.
they had larger beaks.

mg3n2 is known as magnesium nitride

explanation:

i don't think ke is an compound

answer: - 3.) the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

solution: - as per the rules, oxidation number of oxygen in its compounds is -2. the sum of oxidation numbers of all the elements of a molecule or compound is zero.

also, the oxidation number in elemental form is zero.

in no, the oxidation number of o is -2 so the oxidation number of n is +2 so that the sum is zero.

similarly, the oxidation number of c in co is +2 and o is -2.

on product side the oxidation number of n is 0 as it is in the elemental form() .

oxidation number of c in carbon dioxide is +4 as there are two oxygen in it and we know that each oxygen is -2.

so, oxidation number of n is changing from +2 to 0 and the oxidation number of c is changing from +2 to +4.

since nitrogen is reduced and hence no is acting as an oxidizing agent. carbon is oxidized and so co is acting as a reducing agent.

so, the right choice is number 3.)the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.