Materials must pass through a cells semi-permeable membrane in order for energy to be utilized. This process is called 1) reproduction
2) diffusion
3) respiration
4) oxidation.

Crossing over is a method of (blank)?

Which could be a pathway of food through an ecosystem

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?