Http://www.pbs.org/wgbh/nova/cancer/folkman.html
I believe this website will help :)
D. Phytoplankton are most efficient
B , bladder ....
Hope this helps!
The answer: Ventricles.
There are four ventricles in the brain all connected between them,
where the cerebrospinal fluid is produced. There is a choroid plexus in each ventricle that produce the fluid.
The four ventricles:
<span><span>- 2 lateral ventricles right and left (one for each hemisphere)</span>
-third ventricle<span>
- fourth ventricle</span></span>
Interstitial fluid. Hope this help
