In a mushroom what is the visible umbrella shaped portion known as

Which best explains how this maneuver unblock a person's airway?

Which of these statements best describes the st. lawrence seaway? the st. lawrence seaway connects the st. lawrence river with the arctic ocean. the st. lawrence seaway provides an important trading route between the u.s. and mexico. the st. lawrence seaway provides an important trading route for the u.s, but has little value for canada. the st. lawrence seaway connects the great lakes, the st. lawrence river, and the atlantic ocean.

Por qué crees que los huevos con cáscara se llaman amnióticos?