A.
The endurance of an athlete is dependent on his or her body's ability to uptake oxygen efficiently, a task carried out by the red blood cells.
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Answer: true
Explanation: Time is very important when an unconscious person is not breathing. Permanent brain damage begins after only 4 minutes without oxygen, and death can occur as soon as 4 to 6 minutes later. Machines called automated external defibrillators (AEDs) can be found in many public places, and are available for home use. Hope this helps
The two types of cholesterol is dietary and fat-related ?
Answer: none of those listed
Explanation:
Antitoxin can be derived from either human (e.g., tetanus immune globulin) or animal (usually equine) sources (e.g., diphtheria and botulism antitoxin). Antitoxins are used to confer passive immunity and for treatment.