In cardiac muscle cells, the electrochemical messages travel from one cell to another through which structure? A.) Gap Junctions

B.) Tight Junctions

C.) Intercalated Discs

D.) Desmosomes

Me with biology endocrine system crossword also image left i need with hw

Which process of living things produces water that enters the water cycle

Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of