1. Over time, the fish and crab populations have: A. Decreased
B. Increased
C. Stayed the same
D. Fluctuated up and down.

2. Since 2014 the fish and crab populations have:

A. Decreased
B. Increased
D. Stayed the same.

How do the evolutionary chart and the video support the claim that all living things are made up of cells?

Explain the significance of meiosis in sexual reproduction

The table above shows five different types of chromosomal abnormalities that can occur during meiosis. they result in either an individual having too many or too few chromosomes in their genome. what is the most likely cause of these chromosomal abnormalities?