Solución ERL.10.2.1.

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Solución:

1. The leaf has been absorbing oxygen since yesterday.
La hoja ha estado absorbiendo oxígeno desde ayer.

2. How long has the chloroplast been functioning?
¿Cuánto tiempo ha estado funcionando el cloroplasto?

3. Has the plant ever produced more glucose than usual?
¿Alguna vez la planta ha producido más glucosa de lo normal?

4. The stomata have been open for three hours.
Los estomas han estado abiertos durante tres horas.

5. How long has the chlorophyll been in the leaf?
¿Cuánto tiempo ha estado la clorofila en la hoja?

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