Revision

*Used to express something that would have occurred.

*Mostly used in "Si..." clauses as so:

Conditional form of auxiliary verb in future = PQP + Past Participle

               (avoir -> aur_/ étre -> ser_)

Aimer - avoir

Aurais aimé                    aurions aimé

Aurais aimé                    auriez aimé

Aurait aimé                     auraient aimé

Devenir - étre

serais devenu(e)            serions devenu(e)s

serais devenu(e)            seriez devenu(e)s

serait devenu(e)             seraient devenu(e)s

i.e. If I had seen it, I would have bought it.

         PQP                         Contidionnel

      Si je l'avais vu, je l'aurais acheté.

i.e. She would have come, if we had invited her.

              Conditionnel                 PQP

    Elle serait venue si nous l'avions invité. 

  OTHER USES OF CONDITIONNEL (In non-Si..clauses)

x [person x] would have [done something] - expressing an action that did not occur but could have been done.

i.e. à ta place, j'aurait dit - If I were you, I would have told.

x To express an uncertain/unverified fact, especially news.

i.e. There was an accident in the subway.

PQP is used in "Si..." clauses to express something hypothetical that is contrary to what actually happened.

*PQP applied to the verb that follows the part of the sentence with "si", not the part with the possible consequence.

i.e. She would have gone there if she had known

      Elle y serait allée si elle avait su.

i.e. If you had asked me, I would have helped.

* An action that had occurred before another action that is now over. The latter can be wither mentioned or implied.

Formation:

Imperfect of auxiliary verb (avoir/être) + Past participle of the verb

Aimer

j'avais aimé                      nous avions aimé

t'avais aimé                      vous aviez aimé

il/elle avait aimé               avaient aimé

Devenir (with être - the endings are gender and number sensitive)

j'étais devenu(e)                 nous étions devenu(e)s

t'étais devenu(e)                 vous étiez devenu(e)(s)

il était devenu                     ils étaient devenus

elle était devenue               elles étaient devenues

Ex. He hadn't eaten (before going to school)

      Il n'avait pas mangé.

Ex. You went to Dan's house today; you already did the homework.

Ecology

Terms

Example Food Chain

Example Food Web

Energy and Nutrients 

Pyramid of Energy

Cell Respiration 

Cell Respiration defined

Types of respiration 

Glycolysis

Mitochondria