Answer:
Oxygen
Explanation:
Reactants are used to make the products.
The cellular respiration formula is:
oxygen+glucose--> ATP + water +carbon dioxide
The reactants are oxygen and glucose. The products are ATP, water and carbon dioxide.
The gas reactant is oxygen.
Hope this helps! :)
Correct answer: A) The eradication of childhood illnesses
Stem cell are the type of biological cells that have the ability to differentiate into other cell type and can divide to produce different types of cells in the body. They are called regenerative cell which renew itself, they are found in multi-cellular organism.
It can be used as a renewable source of cell replacement and tissue, it can treat serious and common type of disease without organ surgeries and transplantation. It can treat spinal injury, heart disease, diabetes, stroke and osteoarthritis. It has been successfully used in bone marrow transplantation.
Hence, the correct answer would be the eradication of childhood illnesses
