The basic unit of life is:
dna
cell
tissue
protein

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

If your blood becomes too concentrated with iona, what will happen to the red blood cells

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