| This link indicates how excretion is performed in one-celled organisms and how multicellular animals have an excretory organ. Although it discusses human excretion some facts are the same in animals, it states how water and salt are removed and what the lungs expel.
http://www.bartleby.com/65/ex/excretio.html
This link describes the excretion process in the protists, hydra, earthworm, and grasshopper in general.
http://www.quia.com/jg/94047list.html
This link discusses metabolic activity and wastes that are produced from each. It also
discusses the protists, hydra, earthworm, and grasshopper. It gives a little information on nitrogenous wastes and excretion aiding in maintaining homeostasis.
http://www.onteora.k12.ny.us/gbuono/excretion.html
This link describes the excretion of carbon dioxide in the earthworm, it also describes in small detail the
nephridia.
http://members.tripod.com/~powerman486/info5.html This link explains a bit of the Malpighian tubules, wastes, nutrient, and uric acid only in short
formed in the grasshopper.
http://www.unatego.k12.ny.us/0102/excretion/excretion.html
This website gives an in depth look at urine formation and kidneys.
http://www.nsbri.org/HumanPhysSpace/focus4/ep-urine.html
Here you can find more information about the kidneys and urine formation. It also has diagrams,
pictures, and an neat little instant feedback question on each page
associated with the subject.
http://www.rnceus.com/ua/uaintro.html
This link explains the process of excretion involving uric acid, urea, and ammonia and how high amounts of these substances are poisonous.
http://www.backyardnature.net/birdpee.htm
This site a good site that has pictures of excretion and a
review test.
http://www.borg.com/~lubehawk/hexcrsys.htm
This site provides a lot of information about diseases that can occur in the excretory system.
http://biology.clc.uc.edu/courses/bio105/kidney.htm |
