Which organism has ganglia a. fish b. sponge c. hydra d. flatworm the real subject is science

The organism that has ganglia is: B. sponge

Ganglia refers to nerve cells that located in an organism's autonomic nervous system or their sensors. Ganglia exist in sponges as their controller of motoric functions and as a medium to sense things that exist in the environment around them.

the  seven  days  battles  were  a series of seven battles over seven  days from june 25 to july 1, 1862, near richmond, virginia,  during  the american civil war. the  seven  days ended with mcclellan's army in relative safety next to the james river, having suffered almost 16,000 casualtiesduring  the retreat.