Charles is an engineer who is evaluating a prototype of an artificial heart. The prototype beats in a synchronized fashion, is hollow, and has tubes attached to it. It can be powered by electrical signals from the brain when it is interfaced with the appropriate nerves. What important feature should Charles notice the prototype is missing? blood vessels to transport blood
a structure that would divide the hollow heart into chambers to separate oxygenated blood from deoxygenated blood
a blood filtering mechanism to separate oxygenated blood from deoxygenated blood
a structure to pump blood through the valves mom

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a ratio derived from the equality between two different units that can be used to convert from one unit to the other. information obtained from experiments, sometimes called experimental results. the part of the experiment that is affected by the independent variable.

hi! do you know the answer for this flvs question?

what do anaerobic organisms have in common with photosynthetic organisms?

they both appeared on earth at about the same time.

they both can only exist as single-celled organisms.

they both need an energy source in order to survive.

they both produce carbon dioxide as a waste product.

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