<span>Unidirectional flow in the heart is ensured because the heart contains valves that prevent backflow.
These valves keep the flow of the heart going in one direction (hence the name "unidirectional").</span>
A.Humans use their knowledge to locate resources for them selves thereby reducing competition among them
Answer:
D. .................................
Well, It would be placed in a hyper tonic solution and will shrink. Hope this helped!
Corrects a persons errors they made
Hope this helped!
