Which of these correctly relates the biomolecule with its function?

There are four major classes of Biomolecules – Carbohydrates, Proteins, Nucleic acids and Lipids

Carbohydrate for energy, protein for building cells and other fuction like making structures like haemoglobin hair…etc, Nucleic acid for carrying hareditary material and lipids for insulation just to mention few

What the scientist should do first is that, he should identify the local names of the birds are not relevant.

Secondly he should identify the species for each bird by way of using dichotomous key. The work of dichotomous key is to help the scientist to be able to know the speciment's name.

Third the scientist should identify the food which the birds eats.

The fourth thing which the scientist should do is to understand the pattern for the migration of birds.