Certain plants are nitrogen fixers. Alfalfa is one.
No organisms make "air." Air is the natural atmosphere of the earth. Most of it is nitrogen. Most plants take in carbon-dioxide, and produce oxygen. Most animals take in oxygen, and produce carbon dioxide.
any mammals, i believe. or yeasts or bacteria
Yes they do. Many organisms including mammals, fish, fungi and microorganisms do excrete urea.
Eukaryotes are defined as organisms with a nucleus in their cell membranes. 'Animals' are Eukaryotic (mammals, plants, fungi, etc.) and organisms like Bacteria are Prokaryotic (E.Coli, Staph, etc.)
organisms help theenvironment and the environment helps organisms
Yes mammals are organisms .
Almost nothing. Bacteria are unicellular prokaryotes, some of which are autotrophic; mammals are multicellular eukaryotes, all of which are heterotrophic. Bacteria are considered the least advanced organisms on earth; mammals, along with birds, are considered the most advanced. The bodies of mammals contain bacteria, most of which are helpful or harmless, and a few of which are harmful. The only common characteristics of mammals and bacteria are the 7 basic characteristics of living things: all living things maintain homeostasis, are organized into one or more cells, obtain and release energy, grow and develop, adapt to their environments, respond to stimuli, and reproduce.
Digestion - and its all mammals.
mammals
mammals
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Soil food web organisms range from the microscopic to the very visible. They also range from bugs to invertebrates to mammals. Examples include the microscopic fungi, nitrogen fixing bacteria and nematodes, and protozoa. They also include the ground burrowing beavers, ground hogs, and moles and voles. And they include the ground nesting giant cicada killers. And they include the ground tunneling earthworms, and the scavenging ground beetles