Answer:
Cardiovascular
Explanation:Diabetes is high glucose levels in the blood, which is pumped through the heart and arteries in the cardio. system. Endocrine is responsible for hormons, and respiratory is responsible for breathing. Regulatory system is responsible for excretion, so the only one left is cardio.
mark brainliest please
going to the sun without protection repeated times causes freckles. Belive me my face is full of them.
Stimulating the hair follicles for growth
Answer:
1,800,000,000 ways
Explanation:
Given


Required
Number of ways of selection
From the 8 digits; the first must be nonzero (i.e. any of 1 - 9).
There are 9 ways of selecting this:
The other 7 digits could be any of the 10 digits and there may be repetition.
Each of the digits can be selected in 10 ways. So, the number of ways of selecting the 7 digits is: 
<u>For the alphabets:</u>
The first can be selected from the
letters while the second can be selected from the remaining 
So, the number of ways the alphabets can be selected is: 
<u>Total number of selection is:</u>

