Answer:
True.
Explanation:
Antigen may be defined as the chemical that has the ability to evoke the and immune response and can harm the living organisms. The specific antibody are produced against the immune response.
The antigens has evolved different mechanisms to prevent themselves from them the immune system of the host. The antigenic shift is the most common change that might occur in viruses that helps the antigen to protect itself by changing its genetic material. No anti viral drugs are available for the viruses.
Thus, the answer is true.
Because their bodies tell them that they need more oxygen and so breathe faster, and try and get the oxygen their body requires and depends on.
Plants take in carbon dioxide and release oxygen
hope this helps
brainlyist pls <span />
A. True ! Energy can be lost, but not created nor destroyed.
Answer:
Heart disease.
Heart attack
Stroke.
<h3><u> By damaging your airways and the small air sacs (alveoli) found in your lungs.</u></h3><h3><u /></h3><h2>
Hope this helps! Have a nice life!</h2>
