Questions

The system board is also known as the Mother board, Main circuit board, Baseboard or logic board.

Potentially hazardous foods are foods that might contain food poisoning bacteria and are capable of supporting growth of these bacteria or formation of toxins to levels that are unsafe for consumers, if the foods are not stored at correct temperatures. Toxins are poisonous chemicals produced by some types of bacteria.

The food can be left at room temperature until it reaches 60 deg C because food-poisoning bacteria will not multiply at 60 deg C or above. However, do not leave food cooling at room temperature unless you are sure that the temperature of the food is still at least above 60 C.

The Indus Valley Civilization which is also known as Bronze age civilization started around 3300 BC and flourished in between 2600 - 1900 BC and started to decline in 1800 BC.