plutoids hope this helps :)
The answer A. DNA in the nucleus controls all cell activity.
Answer:
D. Separate ecosystems can affect each other.
It is definitely not a primary source: this would be a book itself.
Now, is it a tertiary source? I don't think so: the author of the review should have read the book and should only be referring to this book in the review.
I think it's a secondary source.
175 ml Ethyl Alcohol
250 ml x .70 (70% alcohol) = 175 ml, leaving the other 30% out (75ml)
