I think its compression. I hope I helped :)
Several vaccines are made by taking toxins and inactivating them with a chemical (the toxin, once inactivated, is called a toxoid). By inactivating the toxin, it no longer causes disease. The diphtheria, tetanus and pertussis vaccines are made this way.
The animal kingdom has been divided into two major groups: Invertebrates and Vertebrates. Invertebrates are those that do not possess a vertebral column or backbone while Vertebrates are those where vertebral column or backbone is present.
Stress hormones affect your respiratory and cardiovascular systems. During the stress response, you breathe faster in an effort to distribute oxygen and blood quickly to your body core.
