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skin - acts as a physical barrier; mucus and ciliated cells on mucous membrane in trachea - catch pathogens and sweep them up out of lungs; stomach acid - kills bacteria

Lesson Plan:
Shared text editor:AutonomyBeneficenceConfidentialityDo no harmEquality
This is a simple framework that can you can use to structure your answer to any ethical scenario.
Task f...

Start with a sketch. We can see that the radius from the point (1,7) to the centre of the circle (3,4) is perpendicular to the tangent. The gradient of the radius is (4-7)/(3-1) = -3/2. We know that two p...

Example: Je suis allée avec mes parents et ma soeur au Nord de l'Italie, à Turin. Nous y sommes restés pendant deux semaines, nous avons visité la ville et ses centres culturels, comme la piazza san carlo...

The preterite tense is used for one-off or completed actions in the past. For example: Visitó España el año pasado. / She visited Spain last year.
The imperfect tense is used for repeated or continu...