What does erosion do to landforms and to sediment

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

Color blindedness is a sex-linked trait. if we could see the pedigree chart for several more generations of the family illustrated here, we would expect a) more males to be color blind. eliminate b) more females to be color blind. c) no females to ever be color blind. d) an equal number of males and females that are color blind.

What are levels of ecology and how can we remember them