First, a complete digestive system means that the digestive tract has a beginning or the oral end and the opposite end or the aboral end. This is found in more complex animals starting from roundworms (flatworms have an incomplete digestive tract). A closed circulatory system is found in animals more recent than mollusks. The presence of the coelom makes it more evolved than the flatworms.
Specifically, a small animal with a segmented body, short stiff appendages, and soft skin with the above characteristics point out to the phylum Annelida or annelids.
Answer:
Liquid and with a higher osmotic pressure
Explanation:
Remember that a cell that is surrounded by an environment with a higher osmotic pressure, will produce that the cell get some water outside to make some dilution to the salt concentration that surrounds the protozoan.
<span>The term BIODIVERSITY includes the variety of species in an area of interest. </span>Biodiversity is <span>also called biological diversity It is the variety of life found in a place on Earth or, often, the total variety of life on Earth.</span>
90% of digestion and absorption takes place in the small intestines.
the main function of the small intestines is <span>absorption of nutrients and minerals from food.</span>
It is because it's easy for them to propagate there.......
