Adaptive immunity can be acquired during either 'naturally' (by infection) or 'artificially' (through deliberate actions such as vaccination). Adaptive immunity can also be classified as 'active' or 'passive'
Explanation:
What two exercises could be used to increase your ability to perform push-ups in a fitness evaluation? Push-ups require upper body strength, so weight-training exercises such as the shoulder press, chest press, curl-ups, and dead lift would be beneficial.
A cause for infection is pathogens entering the body. This is either to a disease that's being transferred from one being to another, or through toxins, wounds, and similar things. Most commonly, when fighting the infection, the body produces white blood cells to combat the infection, which in combination with medication usually defeats the infection.
Answer:
The principles of specificity, progression, overload, adaptation, and reversibility
