What are two central ideas of the text?
Responses
A
There is an important need for an artificial blood substitute.
There is an important need for an artificial blood substitute.
B
It is challenging to develop a safe and reliable substitute for human blood.
It is challenging to develop a safe and reliable substitute for human blood.
C
Artificial blood is too costly to be an effective replacement for human blood.
Artificial blood is too costly to be an effective replacement for human blood.
D
Blood is necessary for human life because it transports oxygen throughout the body.
Blood is necessary for human life because it transports oxygen throughout the body.
E
It is difficult for doctors to treat patients who need blood transfusions without more technology.
It is difficult for doctors to treat patients who need blood transfusions without more technology.
F
There is an artificial blood approved to treat patients needing blood transfusions in South Africa.