echinoderms
tubes.
I'm not exactly sure where to obtain cardboard tubes via the internet. Craigslist or another classifieds listing would be my first option if I were looking to obtain large quantities of cardboard tubing.
through a system of tubes! (P.S. are you cheating on your HW?)
The main parts of the female reproductive system are the ovaries, the uterus and the Fallopian tubes (uterine tubes).
It is involved in the upper respiratory system.
The blood vessels of the circulatory system is the system of tubes that carry blood in vertebrates. These vessels include veins, arteries, and capillaries.
Crickets have a system of tracheal tubes that allow for gas exchange. These tubes connect to openings on the cricket's body, called spiracles, allowing oxygen to diffuse directly into their tissues and carbon dioxide to be released. This adaptation helps crickets efficiently obtain oxygen from their environment.
The main parts of the female reproductive system are the ovaries, the uterus and the Fallopian tubes (uterine tubes).
Gnats, like many other insects, obtain oxygen through a system of tiny tubes called tracheae, which branch throughout their bodies. These tubes open to the outside through small pores called spiracles, allowing air to enter and oxygen to diffuse directly into their tissues. This efficient respiratory system enables them to meet their oxygen needs without the reliance on a circulatory system like that of vertebrates.
well developed transport tubes for plants to obtain water and food.
Closed circulatory system.
they are part of your respiratory system