A) single loop
Fish have a two-chambered heart in which a single-loop circulatory pattern takes blood from the heart to the gills and then to the body.
I think. They will die if they do not find another source, depending what it is.
America, Russia or China.
Probably America though.
It should be c at school we worked on this not to hard nor easy
Answer:
Anabolic reactions
Explanation:
it's known as anabolism the machanisms to synthesize all kind of complex organic molecules from simple substances, it requires energy and happens all of the time.
The catabolic reactions are the opposite of the anabolic reactions, they free energy and creates simple substances from complex molecules.