In order to support his theory of evolutionary change, charles darwin concentrated his studies on the many species of finches in the galapagos islands. darwin noted that many of the birds had different shapes and styles of beak. what is a possible explanation for what darwin observed? a) the birds had beaks that were adapted for feeding differently. b) some birds had been injured by predators and were poor competitors. eliminate c) people had bred the bird to have beaks with varied shapes and sizes. d) the birds had different beaks because females preferred certain beak shapes over others.

The correct answer is - A) The birds had beaks that were adapted for feeding differently.

The finches on the Galapagos Islands all derive from a small group of finches that were the same and managed to come to these islands. Over time, they started to develop numerous types of beaks, thus they started to diversify. The reason for this was that there were multiple free niches in the food chain on the Galapagos Islands, so the finches started occupying them. Some developed beaks that are more suitable for eating fruits, some that are more suitable for eating seeds and nuts, some that are more suitable for eating insects etc. All that different types of food choices contributed that they develop a beak type that will enable them to be more efficient in the consumption of their preferable food source.

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explanation:

1. amino acid refers to the fundamental building block of proteins, comprising of an amino group and a carboxyl group.

2. catalyst refers to any substance, which increases the rate of chemical reaction without being used up in the reaction.

3. a complex molecule containing he genetic code is dna or deoxyribonucleic acid.

4. an enzyme refers to a molecule of protein, which is unique in accelerating up a particular chemical reaction in the biological systems.

5. nucleic acid refers to an sequence of sugars, phosphates, and nitrogenous bases, for example, dna and rna.

6. a protein refers to a large, composite organic molecule comprising of a huge number of amino acids associated together with the of peptide bonds.

7. rna refers to a nucleic acid that takes part in the production of proteins.

8. substrate refers to a compound, which takes part in a chemical reaction, and is chemically modified by the reaction.