I've been looking everywhere on the internet and I can't find the right info.
The question is?
Is Single & Double Circulatory system and Open and Closed Circulatory system different or is the double circulatory system similar to the closed circulatory system?
Why am I asking this?
Because it says closed circulatory the blood is enclosed within tubes.....just like the double circulatory system????
I don't need to know what they are just if they are similar or not and just for someone to explain it, not a big problem just a tad bit confused. I had too much to do to ask the teacher today so it's a bit too late.
Please answer asap, thanks