The time difference between the occurrences of two peaks is the period of the wave. The time difference between two consecutive black dots marked also gives the period of the wave. Generally, symbol ‘T’ is used to denote period in physics. Unit of measuring period is seconds (s).
What is the chart? Can you show us what it says?
I think the answer is Specialized cells!
Prokaryotic cells doesn't have a nucleus.
Answer:
atria
Solution
the atria i believe is the upper chambers of the heart..