"an average human has a heart rate of 70 beats per minute. if someone's heart beats at that average rate over a 70-yr lifetime, how many times would it beat? "

Answer : The number of beats (N) in the lifetime is beats.

Explanation :

First we have to determine the life time (T) of the person in the unit of minutes.

T = 70 year = (70 × 365 × 24 × 60) minutes

Conversions used :

1 year = 365 days

1 day = 24 hours

1 hour = 60 minutes

As we are given the rate (R) of the heart beat  is, 70 beats/minutes.

R = 70 beats/minutes

Now we have to determine the number of beats (N) in the lifetime.

N = RT

N = (70 beats/minutes) × (70 × 70 × 365 × 24 × 60) beats

N = beats

Therefore, the number of beats (N) in the lifetime is beats.

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.

yes!

explanation:

because it has a type of fat that can make you extremely sick