How does material move from the respiratory system to the circulatory system? apex?

What happens in the process of photosynthesis

Which of the following does not cause blindness? a. cataractsb. glaucomac. osteoarthritisd. diabetes

Viral infections in plants ) can be controlled with antibioticsb) can spread within a plant via plasmodesmata c) have little effect on plant growthd) are not spread by animals