Answer:
Mechanical barriers are devices that provide a physical barrier between the sperm and the egg. Examples of mechanical barriers include the male condom, female condom, diaphragm, cervical cap, and sponge. The condom is the only contraceptive method that helps prevent sexually transmitted infections (STIs).
Melhor Qualidade de vida, a pessoa tera uma vida mais saudavel.
The answer is Circulatory System. It is responsible for moving blood and oxygen around the body, etc. (Brainiest answer plz and thank you) Hope this helped!
Answer:
Specificity
Explanations: In exercise: Specificity. The principle of specificity derives from the observation that the adaptation of the body or change in physical fitness is specific to the type of training undertaken. Quite simply this means that if a fitness objective is to increase flexibility, then flexibility training must.
For example, a runner should run to improve running performance. However long-Term adaptations to Exercise Training . A trained persons can continue to increase up to near maximal rates of work ,While cardiac output to go to active skeletal muscles .