The correct answer is A. Organisms pass on acquired traits to evolve into more advanced life forms. This is because of natural selection and the mantra, "the survival of the fittest".
A hydrogen bond connects the nitrogenous bases of the nucleotides together!
I think the answer is :extinct
Answer:
keratin
Your nails are made of keratin
Keratin is a type of protein that forms the cells that make up the tissue in nails and other parts of your body.
Explanation:
