List out the significance of Crop improvement.​

What is turgor pressure, what causes it, and what does it do for a plant?

How does the nervous system affect the excretory system?

Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of