Excretory Products and Organs of Vertebrates
Excretory products are Co2, mineral salts, urea, creatinine, uric acid, bile pigments and excess water. Excretory organs are Kidneys, gills, skin, lungs and intestine.
Note: There are several key rules about how to learn words and how to memorize words so that they do not forget the next day. First, combine the words into thematic groups: Food, People, Clothes, Weather, Entertainment, etc. It is very good to combine thematic words with thematic phrases. Also combine words into the meaning groups by their functions in speech, for example: Verbs of motion, Modal verbs, Synonyms, Synonyms and antonyms, Adjectives, Comparative adjectives. Memorize new words in associations (in typical phrases and phrases), and not as individual words. The connections between words in phrases will help you remember the right word. Good dictionaries usually give standard phrases as examples of use, you can memorize them. But for maximum effect, do not be lazy, think up your own example of use. Let it be funny, or associated with some situation of your life. And while you are inventing it, you might want to find in the dictionary a couple of new words.