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The nerve impulse arrives at the synapse. This triggers vesicles to release chemical messengers (neurotransmitters) into the synapse. These chemicals diffuse across the synapse and bind with membrane rece...

The word genuine is ambiguous and as such it is impossible to say whether the emancipation of the serfs was Tsar Alexander II’s only genuine reform. To ascertain a response to this question two meanings w...

You always start with the sun which gives its every to grass which is a producer of energy. The arrow in the food chain, therefore, travels in the direction the energy travels in  (in this case from the s...

Crude oil is formed from detritus (dead living matter) of animal, plants and microscopic organisms under intense pressure and temperature. It is trapped under impervious rocks which stop the liquid and ga...

The subjunctive mood (NB: NOT tense) in French is primarily a means of expressing uncertainty - something that you wish, hope or fear, rather than something that is definitely the case. This textbook-styl...