Answer:
mutualism is the relationship they have
Answer:
The walls of the arteries are very thick. They are made up of thick elastic fibres and smooth muscles.
Arteries can be described as blood vessels which function to transport blood from the heart to other parts of the body. The blood that the heart pumps is high in pressure. Hence, the thick walls of the arteries are adapted to carry blood that has high pressure.
The other blood vessels do not have as thick vessels as the arteries.
The giraffe head is higher than its heart so the blood pressure in the head must be lower than in the heart. The pressure is directly related to the density, gravity, and the height. The calculation would be:
<span>P = ρ*g*h
</span>P= 1.05* 10^3 kg/m3 * 9.8m/s2 * 2m= <span>20 580 pascals= 20.58 kpa</span>
The tundra and the savanna desert