Species are disappearing at an accelerating rate through human action, primarily habitat destruction but also pollution and the introduction of exotic species into residual natural environments. i have said that a fifth or more of the species of plants and animals could vanish or be doomed to early extinction by the year 2020 unless better efforts are made to save them. as the last forests are felled in forest strongholds like the philippines and ecuador, the decline of species will accelerate even more. in the world as a whole, extinction rates are already hundreds or thousands of times higher than before the coming of man. they cannot be balanced by new evolution in any period of time that has meaning for the human race. what message does the author convey in this excerpt?

Humans need to take action to end further destruction of the natural environment.

Explanation:

In this excerpt, the author is telling us how species are disappearing at an incredibly fast rate, and how our actions are making this worse. The author explains the seriousness of this situation and the responsibility we have of fixing it. The message that the author is trying to convey is that humans need to take action to end further destruction of the natural environment.

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.

vey information about pap? physical description beliefs actions interactions