The second line of defence is a group of cells, tissues and organs that work together to protect the body. This is the immune system.
When a pathogen (disease-causing organism) invades the body, the neutrophils gather at the entry site and try to engulf it and destroy it.
A T helper cell will recognise only one pathogen. If the T helper cell recognises the invader, it will immediately clone to increase numbers.
After a few days of fighting off the pathogen, you will recover from your infection.
The answer is C. Self-actualization
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Answer:
the light emitted by those devices is like a wake up call to the human brain. Specifically, the light prevents a hormone called melatonin from building up in the brain. It's this nightly production of melatonin that enables us to fall asleep.
Explanation:
the light emitted by those devices is like a wake up call to the human brain. Specifically, the light prevents a hormone called melatonin from building up in the brain. It's this nightly production of melatonin that enables us to fall asleep.
