Answer: There are three classes. These classes include Calcerea, Desmospongia, and Hexactinellida. They are divided into these classes based mostly on the composition of their spicules and skeletal fibers. (spicules are rod-shaped cellular projections that make up the skeleton of sponges) hope this helps!
Explanation:
There are four main types of passive transport: Osmosis, diffusion, facilitated diffusion and filtration.
Nutrients in coral reefs are recycling efficiently because the water is so shallow. Coral reefs are generally located along tropical coastlines, in open ocean deserts. They thrive in tropical, low nutrient waters because there is no phytoplankton in there. They are home to a large number of species,
Hi there,
The answer to that fill-in the blank is Liver.
The Liver is where urea is produced.
It also performs 500 different functions in your body, that is why your liver is important to your body.
Hope this is correct :)
Have a great day
Answer:
A
Explanation:
A, the guy with 1 star provided the most noneducational response I've ever seen.
