Answer:
QUESTION:
Is plastic a pure substance or an impure substance?
ANSWER:
Pure and impure substances
Pure substances have a sharply defined (one temperature) melting or boiling point. Impure substances have a temperature range over which they melt or boil. Chromatography is the process of separating substances into their individual components.
Explanation:
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Explanation:
A two-way link exists between malnutrition and poverty, creating a vicious cycle with each fueling the other. Malnutrition produces conditions of poverty by reducing the economic potential of the population and likewise, poverty reinforces malnutrition by increasing the risk of food insecurity.
Answer:
1. viajar -el viaje
2. volver -vuelta
3. salir -la salida
4. llegar -la llegada
5. esperar -espera
6. la hora -el horario
7. la ventana - la ventanilla
8. andar -el anden
Explanation: