Answer:
The correct answer is option A. "The contents of blood come into closer contact with tissues in a closed system than an open system".
Explanation:
In a closed circulatory system, the blood has an specific path, circulating from arteries to veins and to smaller blood vessels throughout the body. This is in contrast with open circulatory systems at which the blood is not contained in arteries or veins but it suffuses the body. A closed circulatory system have many advantages over open circulatory system, however in a closed circulatory system the contents of blood are not into closer contact with tissues in than an open system. Actually, in an open circulatory system the blood is in closer contact with tissues.
About 115 individuals in 1910 . Hope this helped.
<span>The brains of adolescents
continue to grow as the last spurt of growth
of the brain begins. The prefrontal
cortex and the limbic system which are responsible
for ‘executive functions’ (working memory and planning) begin to mature.
At this age, the brain neurons also become highly <span>myelinated.</span></span>
10)since its by 6 its 12*6=72 is your answer.
12)4 cause 4*4=16 and 7*4=28.
