What are responsible for carrying out most cells functions

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?

The cluster of developing cells from conception until birth is called an

Which of the following words best matches this definition: the process in which the best adapted organisms survive and pass on their traits, while those that are not well adapted do not survive to pass on their traits. question 3 options: acquired selection natural selection artificial selection organic selection