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Hello students, let us answer these given questions one by one.
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The answer for the first question is option c, cardiovascular system.
00:13
Option c, cardiovascular system.
00:20
This is the correct answer because the cardiovascular system consists of the heart, blood vessels and the blood and it is responsible for carrying necessary compounds like oxygen and nutrients throughout the body.
00:38
The heart pumps oxygenated blood to the organs and tissues and it delivers oxygen and nutrients to support their function.
00:49
The correct answer for question 2 is option c, basic structural unit living organisms.
00:58
This is the right answer because a cell is the smallest functional and structural unit of living organisms.
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It is composed of various organelles and it carries out essential functions necessary for the survival and functioning of the organism.
01:19
The answer for the third question is option a, digestive system...