The members of the phylum Mollusca are soft bodied marine animals but some are found in fresh water or on land. Members are usually bilateral. Few are secondarily asymmetrical (snail) due to twisting (snail) during growth. These are triploblastic with system level have true body coelom. The body is divided into three regions: head, visceral mass and foot. Calcareous shell around the body in most cases. Examples are snail, octopus, sepia, etc.
science is different from many other ways of learning because of the way it is done. Science relies on testing ideas with evidence gathered from the natural world.
