A principal função dos métodos contraceptivos é evitar uma gravidez em período não adequado à vida de um casal. O esquema acima apresenta um desses métodos. Considerado como o mais eficaz dos métodos contraceptivos, o procedimento ilustrado atua (5 Pontos) evitando o contato do esperma com o canal vaginal. evitando que o embrião formado se implante no útero. impedindo a união entre os gametas masculino e feminino. impedindo a entrada dos espermatozoides no útero.

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands

i would say it is

about 40,000,000 results (0.81 seconds)  

search results

what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.