Answer:
If this is a T/F the answer is true
Explanation:
Idk what the question is but if its not a t/f question lmk how I can help :)
Answer: here please read the Difference between Natural gas and fresh air...
Explanation:
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.
Nutrients is the substance in food