Hi,
9. What is the amount of fluoride concentration in water that's considered safe for the prevention of dental decay?
D. 1 part per million
I don't know, is your dog okay?
Maybe your dog senses that you can smell again and wanted to see for himself :O
Otherwise how did you lose your sense of smell?
If your dog is okay, then give he/she food because maybe they think it is food. Or the other option to to pay more attention because dogs might do that for more attention (play with them more)
Search on Siri
I do not wanna give a wrong answer
I believe in u u can do it
Hope u get an A plus :(
Answer:
a. QRS
Explanation:
In Human anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.
Generally, the cardiac cycle occurs in two (2) stages;
Diastole : in this stage, the ventricles is relaxed and would be filled with blood.
Systole: at this stage, the muscles contracts and thus, allow blood to be pushed through the atria.
The right atrioventricular valve (AV) comprises of three (3) leaflets (flaps) which opens and closes in order to allow for the flow of blood from the right atrium of the human heart to the right ventricle. Also, the right atrioventricular valve is saddled with the responsibility of preventing blood from flowing backward in the mammalian heart.
The QRS complex represents the time necessary for the impulse to travel through the bundle of His, the bundle branches, and the Purkinje fibers to complete ventricular activation or contraction, known as ventricular depolarization. QRS is simply a combination of the Q-wave, R-wave and the S-wave which represents electrical impulses.
<span>- proteins: 1 gram of protein provides 4 kcal or 17 kJ,
- carbohydrates: 1 gram of carbohydrate brings 4 kcal or 17 kJ,
<span>- lipids: 1 gram of lipid brings 9 kcal or 37 kJ,</span></span>
