Answer:
A. 30:2
Explanation:
After every 30 chest compressions at a rate of 100 to 120 a minute, give 2 breaths.
The breathing process is controlled by the central nervous and respiratory systems. Hope I helped ^-^
Activity can help prevent heart disease and stroke by strengthening your heart muscle, lowering your blood pressure, raising your high-density lipoprotein (HDL) levels (good cholesterol) and lowering low-density lipoprotein (LDL) levels (bad cholesterol), improving blood flow. and your hearts over all function
The appropriate answer is 3. Fats. Fat is a triglyceride molecule. Collectively fats form a type of tissue known as adipose tissue. The primary function of fat is energy storage but when concentrated in adipose tissue it provides thermal insulation and also doubles as a shock absorber for vital organs in the body.
Nucleic acids transmits genetic information and is used in cellular activities such as protein synthesis. Carbohydrates when broken down provides heat but are not involved in insulating the body.
Fun fact: i don’t think any of us asked
