Answer:
Trough – the lowest point below the rest position. Amplitude – the maximum displacement of a point of a wave from its rest position.
Which of the following are parts of the cardiovascular system?
a) Blood
b) Heart
d) Blood vessels
Choose: a); b); d)
Answer:
Four major components
Explanation:
A- There are 4 major components of the blood.
1- Red Blood cells 45% of blood portion
2- White blood cells make up to 1% of blood proportion
3- Platelets less than 1% of the blood portion
4- Plasma 55% of the blood components
B- platelets are responsible for initiating the clotting process.
C- pathogens can enter into the body through airborne particles, skin contact, through food and body fluids.
Continents are land masses that exist on the surface of the earth. The continents are part of the uppermost layer of the earth which is called the crust.
