I think photosynthesis is mainly from sunlight to make energy for food for the plants
The biggest challenge is rejection. Sometimes the human body will not accept the pig organ unfortunately.
Hope this helped. Good luck !
This dispersal reduces the likelihood that a sperm will find an egg. Many sperm and eggs die before achieving fertilization. The low success rate of external fertilization puts animals at a reproductive disadvantage compared to internal fertilization.
In order to float in water, the density of an object has to be less than the density of the water. Since saltwater has a higher density than fresh water, a person will float more in the ocean than they would in a lake
4 Because animals that raise their young in packs is a cooperative task