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An exothermic reaction is one in which heat is released from the reaction system to its surroundings, causing an increase in temperature. 'Exo' means to give off, heat is expelled in this reaction. An end...

• There is genetic variation within the population of bacteria
• The variation has occurred due to random genetic mutations
• This variation means that a bacterium may have a mutation th...

There are 6 different cases in Russian, lets go through the first one: 1) nominative (именительный падеж)- this is when the noun of a sentence is the subject of the sentence. So it answers the questions '...

Intro: define depreciation and economic performance

Analysis: depreciation leads to increase in exports (less expensive in comparison to foreign goods), and decrease in imports (more expensive in c...

These two tenses both express actions and states in the past. However, the imparfait should be used in cases of repetitive situations, a description or an action without a limited time frame. For instance...