on earth there are abot 5 trillion sponges
The first sponges were natural. They are some of the oldest animals to ever live on earth.
Sea Sponges, They Absorb The Most Water Or Any Fluid And Synthetic Sponges Don't Have As Much Absorbency, Also They Don't Have As Many Holes.
yes
1,000
sponges are really only one color which is yellow A)you can die sponges,so really they can be any color but they are mostly yellow
Many sponges are planktonic in their larval stage. Full grown sponges are sessile.
i would say in the ice ages
tube sponges come in many natural colors such as brown, dull green and yes, yellow. secondly tube sponges reproduce by spliting their selves in half. so i guess their only family is the one sponge.
9000
2
many ways
Many cell organelles resemble sponges.