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For a reaction to occur between particles (reactants) they must overcome an energy barrier. This is called the activation energy. A catalyst provides an alternative pathway for the reaction, that has a lo...

180-140=40 

40/2 =20

each other angle is 20 degrees

12x^2 +3

Destructive plate margins are those where two plates are moving towards one another. In cases where an oceanic plate and a continental plate converge, the denser oceanic plate will be forced beneath the c...

What is the 3rd person plural conjugation of Hablar in the present tense?

HABLAR

Forming the present tense:

Hablar - AR

Habl + ending<...