No a single consumer is a single consumer,
You can only be you, Although each has their own thoughts and opinions
The answer is B. They bring oxygen from the air into the body.
The lungs don’t produce or release oxygen so it’s not A. or D. The lungs do not transform oxygen into carbon dioxide cause our bodies need oxygen not carbon dioxide so it’s not C. Hope this helps!
In terms of parasites vs hosts, it is an organism in which the parasite resides and normally feeds + reproduces.
