Answer the following questions :- 1) How does the blood carry various substances ?
2) How many pulses beats could you count ?

1) transports substances like digested food from the small intestine to the other parts of the body.

2) Normal heart rates at rest: Children (ages 6 - 15) 70 – 100 beats per minute. Adults (age 18 and over) 60 – 100 beats per minute.18-

Explanation:

I hope it will help you

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.