<span>as animals get separated from each other, they soon start to adapt to the new environments which is called speciation</span>
The correct answer is a sponge.
<span>A sponge (Porifera) is a multicellular organism which consists of two layers of cells and the mesophyll between them. Those cells are unspecialized and can transform into other types. The body of sponges is full of pores and channels which allow the water to circulate and thus to obtain food and oxygen.</span>
Your answers would be Hormones and Bloodstream
hope this helps.