Answer:
To allow air to enter into the bag and provide air and breathing room for the vegetables.
Answer:
Physical activity helps prevent chronic illness, which reduces the need for medical treatment.
Explanation:
All of them except condoms. Everything you take orally gives you hormones such as progesterone and estrogen to fool your body into thinking you’re pregnant so you won’t produce an egg that month. Other methods such as the ring and patch do the same, just not through direct ingestion.
Answer:
Two tests you can do at home to test your cardiovascular fitness and respiratory systems are Lunges and Pushups.
As people progress into old age, their disease-fighting immune systems become reduced.
<h3>The effects of aging on immune system</h3>
Immune system is the major system of the body that protects the body against invading disease causing microorganisms. It is made up of,
- proteins (antibodies) and
As an individual advances in age, the efficiency of the immune system, which is it's ability to fight diseases, would reduce.
This is because the production of white blood cells, antibodies and chemicals are equally reduced.
Therefore, as people progress into old age, their disease-fighting immune systems become reduced.
Learn more about immune system here:
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