Атмосфера состоит из механической смеси газов, называемой воздухом. (а) Укажите % соотношение газов в атмосфере, используя данные круговой диаграмм
Состав атмосферного воздуха
19.
(b) Объясните функции кислорода в составе воздуха,

Which statement is a proper biconditional statement for the conditional statement: if a line intersects a line segment at its midpoint, then it is a segment bisector. if a line is a segment bisector, then it intersects the line segment at its midpoint. if a line does not intersect a line segment at its midpoint, then it is not a segment bisector. a line intersects a line segment at its midpoint if, and only if, it is a segment bisector. if a line is not a segment bisector, then it does not intersect the line segment at its midpoint.

What was the first official pair of sister cities?

Quiero una redaccion de yo soy medico y que tenga 10 lineas