Answer:
We all know that air contains lots of microbes in it and it can be proved by putting a plate containing broth media in open air. After some time microbes will appear on the plate.
In this question, there is two flask a normal flask that is open to the air and a swan neck flask with a curved neck to limit air movement. So in normal flask which is open to air microbes can easily be transmitted into the flask through the air but the swan neck flask does not allow air movement in the flask, therefore, no microbe can enter into the flask.
Therefore due to contamination through air open flask shows immediate signs of rotting and the presence of microorganisms. So contact with air is the reason for the presence of microorganism in the open flask.
<span>A person who overeats is most likely eating because of a. their appetite. When the holidays come around, people cook holiday food which is not served or cooked throughout the year. So when the time comes around, they are ready and anxious to eat the holiday food. They have worked up the appetite for it and it is so good that they continue to eat until they stuff themselves.</span>
Explanation:
Other exercises that can help improve cardiorespiratory fitness include:
1.running and walking
2. dancing.
3. jump rope.
4. Sports
Note: It is important to exercise to stay fit, heathly, and strong which can also keep you living longer and can keep cancer away for a long time.
Answer:
D and A
Explanation:
Fever is not a symptom of cardiomyopathy because fever is usually associated with a infection and cardiomyopathy is not. The usual symptoms of cardiomyopathy are: Breathlessness, swelling of members, bloating of the abdomen, fatigue, uneven heartbeats and dizziness.
Physical activity prevents cardiovascular diseases. All the other alternatives are risks factors for a cardiovascular condition. Obesity can cause obstruction of blood vessel, diabetes causes circulation system problems and tobacco use damages tissues and blood vessels.