Answer:
The circulatory system tends to pump blood around the whole body, while the respiratory system tend to facilitate the exchange of gas in the body so then the blood will look totally fresh. In simpler terms, the heart is connected to the lungs through the means of arteries and veins.
Explanation:
Answer:
Explanation:
There are so many factors which works to stop a car from sinking into road surface. One is reaction force other factors are density of material from which the car is made of, mass and shape of car.but the most important force is the reaction force. According to the Newton's 3rd law of motion:- every force have equal force acting in opposite direction.
B.Helium increases the balloon's mass more than air.
C.Helium has a higher density than air.
D.Helium has a lower density than air.
Compared to the air the density of helium gas is very less. The less dense helium will float on air. That's why balloon filled with He gas rise in air.
Helium is 2nd element in periodic table. It is a non-metal and is placed with the noble gases because it is having fully filled electronic configuration leading to the stability.
Density of a substance is the ratio of its mass to the volume. When a substance is less dense than the fluid on which it occupy, it will float on the fluid. If it is more denser it will sink on it.
The density of helium is very much lower than that of air. Therefore, the balloon filled with helium gas will rise in the air, while the balloon with filled with air does not.
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T or F