In an inconvenient truth, green roofs are beneficial in fighting global warming because a. they are beautiful. b. they have solar panels, which collect energy. c. they emit water vapor, which cools the atmosphere. d. they support plants, which filter carbon dioxide from the air.

Letter C. They emit water vapor, which cools the atmosphere.

There are already several studies that prove that green roofs contribute to decrease the heat of the place and consequently helps in the fight against global warming. And it can positively affect climate change.

Experts say that depending on the region and geographical area, is completely dispensable the use of air conditioning, an example of using green roofs.

In this film, Al Gore is on a lecture circuit, as the former presidential candidate campaigns to raise public awareness of the dangers of global warming and calls for immediate action to curb its destructive effects on the environment.

the answer would either be a or d

i hope this

the answer is:

when will (v) the books (n) be (v) due?

nouns refer to people (other than pronouns), places and things, whereas verbs describe actions and are usually part of the predicate of a sentence. finally, pronouns can work as nouns and identify the participants in speech.

in the example sentence, "will" is a verb part or auxiliary verb, "be" is an infinitive verb and "books" is a plural noun.