There are seven main levels of classification, divided into five kingdoms.
Animal - Animals are multicellular eukaryotes whose cells are bound together by collagen.
Plant - Plants are predominantly photosynthetic eukaryotes of the kingdom Plantae.
Fungi - A fungus is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms.
Protist - A protist is any eukaryotic organism that is not an animal, plant, or fungus.
Monera (unicellular) - Kingdom Monera belongs to the prokaryote family. These are the oldest known microorganisms on earth.
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I think that it is true but not 100% sure
D. wolves catch prey by hunting in packs trust me i got it right
It is quite possible to combine the same two elements to form two different compounds. An example would be carbon dioxide CO2 and carbon monoxide CO. Thus, two elements can form different types of bonds and end up with completely different compounds. Like, Hydrocarbons are compounds made of Hydrogen and Carbon only, and there are many different hydrocarbons. There is a limited number of elements, but a larger number of compounds because of the example demonstrated above.