The answer is letter
D.
<span>
Communicable diseases
are also known as infectious or contagious diseases. They may come from food,
water, animals, another person, or anything that comes from the environment. <span>Airborne
viruses, bacteria, blood, and bodily fluids can cause the spread of these
diseases. The most common communicable disease is the flu, which can easily
spread in an enclosed environment with a recycled circulating air (e.g.
air-conditioning). Infectious disease caused by blood contact like HIV/AIDs are
also dominant in society. </span></span>
Answer: Option B
Explanation:
Cheerleading requires stamina for a longer period of time. This activity requires more energy and one who is training for cheerleading needs to get training for working on her body.
Rae is getting training for this activity as she has started 45 minutes roller blading for enhancing her endurance.
After rollerblading her heart rate is 128 beats per minute but she wants a heart beat of 140-170 beats per minute. For this she should skate on the hills in the park to get more strength and increase the cardio respiratory process.
Public speaking gives an advantage to their personal, social, and professional life. :)
Have an awesome Day!
<em>why does working out make us feel good?</em>
<em />
That "feel good" chemical is known as Endorphins. They are released during exercise because of the body goes through extended amounts of stress when exercising. Have you ever heard of the "Runners high"? It's actually a real sensation that you can thank Endorphins for.
Serotonin is also an important chemical that contributes to why exercise feels this way. Have you ever felt depressed after sitting around and doing nothing? Low serotonin is one of the biggest contributors to feeling depressed. Serotonin is in alot of anti-depressant medications. Serotonin is mainly released through exercise.
There could be a reason not relating to chemicals at all. Working out and seeing the results gives us a major confidence boost.
The answer is 20 minutes. You must have 20 minutes of cardio each day to have an effective cardio exercise.