Heredity or something like that I don’t speak English sorry
The process where a specie develops and evolves into new many species is termed as speciation. Macroevolution explores the mechanism of speciation where organisms across biological populations evolve as distinct population.
There are many causes to speciation, a) geographic isolation, b) gene flow reduction, and c) reproductive isolation.
Answer:
2. muscular system and cardiovascular system
First blank: The mobility of their hosts same goes for the second one :)
A. Osmosis. Hope this helps :)