Explain which cells, tissues, or organs should be modified to lead to successful photosynthesis in animals or humans. discuss how these compare to a plant's leaves. 

How does a bone marrow transplant treat sickle cell disease?

American college students invented football by combining what two sports?

What is difference between an epidemic and a pandemic? a) an epidemic is a disease; a pandemic is a treatment.b) an epidemic is restricted to a local region; a pandemic is global.c) an epidemic has low mortality; a pandemic has higher mortality.d) an epidemic is caused by a bacterial infection; a pandemic is caused by a viral infection.