The cardiac cycle is the performance of the human heart from the ending of one heartbeat to the beginning of the next heartbeat.It consists of two periods: one during which the heart muscle relaxes and refills with blood, called diastole, following a period of robust contraction and pumping of blood, dubbed systole.
Imaginary line or Half of the earth dividing north east west or south.
The area in which two air masses meet is known as font
Answer: Looks at oceans as highways instead of barriers
Explanation:
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