Please repost this question as a Spanish question next time. <span>Por favor vuelva a hacer esta pregunta como una pregunta en español la próxima vez. Thank you, gracias.</span>
Scientists believe the earth is approximately 4 1/2 billion years old
<span>My answer: Mutations are a change in the genetic structure of a chromosome. Chromosomes contain DNA and RNA, and strands of DNA 'codes' if you will, make up a chromosome.
Hope I helped! :D</span>
A new type/species of plant.
Answer:
When an organism is buried quickly, there is less decay and the better the chance for it to be preserved. The hard parts of organisms, such as bones, shells, and teeth have a better chance of becoming fossils than do softer parts. One reason for this is that scavengers generally do not eat these parts.
Explanation:
