I believe it’s carbon dioxide, because you use your respiratory system to breathe in oxygen, and oxygen goes through your circulatory system. And you breathe out CO2.
Hi !
Answer:
Type 1 Offshore Life Jacket :
<em>- All waters, especially open, rough, or remote waters where rescue can be delayed</em>
<em>- Large and awkward; difficult to swim in</em>
<em>- Will turn unconscious wearers to face-up position.</em>
False. Hereditary means something really different.
So its acquired immunity and the cells responsible are the B lymphocytes that produces antibodies against the virus. Memory is keep since first encounter of the virus by the immune system by way of the antibodies that was initially produced. The antibodies are there already, which makes it fast to act upon when expose again.
A bacterial STDs are caused by bacteria that enters the body either through skin contact or body fluids. a viral std is a sexually transmitted infection that is caused by a virus. unlike bacteria viruses these are not living organisms and need a host cell in order to replicate and survive. some of the most common vital stds are HPV, herpes, hepatitis and HIV these cannot be cured however although a virus will remain in the body for life symptoms of the virus that might be not be present at all times.
