Answer:
A they have increased dramatically
Explanation:
As the time progresses it was relatively stable until about 1800, and then the atmospheric CO2 increased dramatically
Bioprinting refers to an extension of conventional three-dimensional printing. It can help in generating bone, living tissue, blood vessels, and possibly the entire organs for applications in medical approaches, examination, and testing.
The given statement is True. Though the invention of bioprinting is regarded as a revolutionary advancement and as a solution to organ failure, organ destruction, and others, there are various ethical concerns regarding it. These concerns are regarding human testing at the time of experimental phases, and complications like irreversibility and others.
