They are abstract nouns because they don't state directly what they stand for but rather a vague meaning left to individual interpretation. Concrete nouns would be blatantly specific in their meaning with little room for individual interpretation of their meaning.
Answer:
I think the answer is B), Because the only reason the author would add that evidence is because it's showing that today, birds could spread another disease just like the Spanish flu. Hope this helped :)
Hope it helps!
<em> ItsNobody</em>
The simile "teeth white as milk" found in the second stanza of the poem most likely refers to C. the foam on the waves.
The man in the moon makes no sense, since the poem is talking about the sea. A great white shark would be a silly answer. The darkness of the sea is also incorrect because that can't be white if it's dark. So, the foam on the waves, which is white, by the way, is the correct answer.
Look at the underlined section marked (12). Choose the answer that best corrects this sentence, if appropriate. I think-> B) Animals used in a Species Survival Plan are sometimes taken out of the public viewing areas for a private, less stressful area to breed and care for their offspring in the first critical weeks
