Yes, worms are indeed a member of the animal kingdom and are living.
Living.
Living
yes
no. its a living animal. i believe its a mollusc.
Yes
A living tiny worm with a red head could not live your menstrual blood. Most likely, it is a small blood clot.
It is a planaria. It doesnt bother humans.
Yes, the host is living, whether it be a host for a virus, a worm, or a bacterium.
An example, a parasitic worm is a worm living in the intestines of a host, drawing nutrients, but only causing sickness to the host in return.
amoeba
star fish and a worm
mutalism