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.
Answer:Of the more than 7,000 chemicals in tobacco smoke, at least 250 are known to be harmful, including hydrogen cyanide, carbon monoxide, and ammonia (1, 2, 5). Among the 250 known harmful chemicals in tobacco smoke, at least 69 can cause cancer. Explanation:
Answer:
Invented in India in a version called poona. British army officers learned the game about 1870. In 1873 the duke of Beaufort introduced the sport at his country estate, Badminton, from which the game derives its name.
Explanation: You're welcome :) maybe mark brainlist....
Five stages of change can be distinguished: pre-contemplation, contemplation, preparation, action and maintenance. In the pre-contemplation stage, people are not considering increasing their physical activity level, at least not within 6 months.
