Ineed with questions 46-48 and it’s very hard and i’m struggling with it and if you need to see the picture big then click on it and it will be big

When analyzing tree rings, what do scientists assume a thin ring indicates?

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

Gregor mendel is best known for his work with pea plants and for uncover many of the mysteries of genetics. one of his major findings stated that there were specific, physical units of inheritance that are transmitted during reproduction. what is the the name given to these units of inheritance which can be found on chromosomes? a) centromeres b) cytoplasm c) genes d) nucleotides