Idiom
Hemoglobin ,the oxygen carrying substance in red blood cells,is a

Proteins
Carbohydrates
Fats
Nuclei acid

ANSWER DOWNLOAD EXAMIANS APP

Idiom
To fight to the bitter end

To carry on a contest regardless of consequences
To die fighting
To fight the poison-tipped arrows
To fight to the last point of enemy position

ANSWER DOWNLOAD EXAMIANS APP