C. crossing over This is because each gene have a piece of each other Hope this helped=)
The answer is mitochondria.
Some common issues of digestive health include heartburn, cancer, irritable bowel syndrome, and lactose intolerance.
Well, first off the spongy mesophyll does have some chloroplasts, however they are located quite far from the surface of the leaf where most of the chloroplasts are. Therefore they don't get much light and don't contribute a lot to photosynthesis in the leaf. So why should the leaf waste the energy in making chloroplasts if there is not enough light to make them all efficient enough at photosynthesis?
Answer:
b it does not really help structural support that is more a cell wall thing
Explanation: