That is true, is there a question?
The linking verb is the word, "is" and "effective" is the predicate adjective.
I hope this helps.
Take care,
Diana
Tall mountain ranges prevent moisture-rich clouds from reaching areas of lee, or protected side, of the range. as air rises over the mountain, water is precipitated and the air loses its moisture content. a desert is than formed in the preside “shadow” of the range.
hope this helps :)
After writing each paper you should revise it and edit it.
I think "I" should be replaced with me. Because if you're going to remove Mary in the sentence, it will be "He wanted ME to do the work" not "He wanted I to do the work" so changing I to me will make more sense.