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.

25) a student takes four samples of a white crystalline solid and places each in a well plate. on top of each sample, she carefully places 20 drops of clear mystery liquids a, b, c and d. her results for each well are: liquid a: the solid dissolves quickly. liquid b: the solid appears unchanged. liquid c: a brownish colored liquid is produced. liquid d: fizzing occurs and the well becomes warmer. in which well does a physical change occur?

Asap timed! 1. ice core samples from glaciers ice caps contain bubbles of ancient atmosphere that are in layers based on age. what questions are scientists most interested in? a. how the amount of water vapor needed to make the ice has changed b. how the amount of ozone has changed over time. c. how the amount of ice in each layer has changed over time d. how the amount of carbon dioxide has changed over time 2. what produces milankovich cycles ? a. sunspots ams solar flare on the suns surface b. changes in the earths orbit c. gravitational changes bases on the position of the sun and the moond. cycles of vegetation that result in desert and rainforest conditions

Identify the composition of oceanic and continental crystal rocks. in a model of earth’s interior, where would these rocks appear?