The last stage of embryonic development where the embryonic stem cells are found is the blastocycst. In this stage the cell differentiates and group themselves into different body parts and specialized cells. This stage is reached with in the period of 3 to 5 days of the embryo development.
The RNA determine the instructions for a specific trait in an organism, since the DNA cannot leave the nucleus of the cell the RNA then makes a copy of the dna
If there are more seeds available then the number of finches will increase as they will have a sufficient food supply.
The Earth is 92.96 million miles away from the sun :)