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The majority of gerunds in Spanish correspod to that of the -ing ending in English. It can be used as a kind of adverb to refer to: a simultaneous action, Se ha ido acumulando. a cause, Viendo que era tarde,...

The perfect tense makes a distinction between the perfect tense (I have gone out) and the simple past (I went out). The form constits of the verb haber: he has ha hemos habéis han The following verb will the...

Diffusion is the movement of particles from an area of high concentration to low concentration (down a concentration gradient). This occurs because the particles move randomly, and eventually end up evenly s...

A concentration gradient occurs when you have a solute, like salt, dissolved in a solution, like water. Most of the time there won't be the same amount of salt through out all of the water - there will be mo...

For this answer, like with any other essay question, I encourage my students to draft an essay plan prior to writing. By doing so, my students show me their strengths and weaknesses which allows me to tutor ...