Answer:
D is the answer.
Explanation:
It's all of the above. Facts are just statements about what is currently known. Things can change and quite frequently do. Newtons mechanics is far different than that of Einstein, yet both were declared true in their time.
So A is true
B is also true. The guesses of great minds often get tested and turn out to be right.
C That's the definition of a fact, but the truth is that a fact can be found to be incomplete.
The heart sounds are primarily produced when the valves (i.e. semilunar valves, tricuspid valve, mitral valve) close rather than the sound of the actual contraction. In the closure of the aortic semilunar valve, the second heart sound is produced or the S2; in contrast to the closure of the mitral and tricuspid valves which produce the first heart sound or S1. The S2 is ultimately related to the diastole which corresponds to the filling phase of the ventricles.
Answer:
I feel like B is the correct answer
Explanation:
B is correct
Hello fellow student!
These would be called Pre-synaptic cell & post-synaptic cell.
Happy studying.
~Brooke❤️
<span>Infections
</span><span>viruses
</span>Bacteria
Mold
and so on.
