"Proper knowledge of mechanism and skill of operation is essential while using appliances". Justify this statement with suitable
reasons.

If the polar bear were taken out of the food chain what would happen to the seal population the seal population would diminish the seal population would grow dramatically the seal population would stay the same the seal population would decrease slightly

What are listed in the vertical columns across the top of the event editor? a. file names b. conditions c. check marks d. action types

Facial expressions and gestures are examples of messages.