How have seals, penguins, and small baleen whales of antarctic waters benefited from the decline of large baleen whales?

The seals, penguins, and small baleen whales have benefited a lot from the decline in the large baleen whale populations.

The reason for the the benefit is that there's much more food available with the smaller number of large baleen whales feeding in the waters. The large baleen whales eat up to 3.6 tons of food per day in half of the year. The food they eat is mostly zooplankton and small fishes. The small fishes are also the pray for the penguins, seals, and the small baleen whales. So with the declining number of the large baleen whales, the other three species mentioned have much more food available, and also one competitor less.

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.