Answer:
D. all of these
Explanation:
Bacteria and viruses can travel through the air. A teaspoon of productive soil generally contains between 100 million and 1 billion bacteria. There are many bacteria in the human body, especially in the stomach and mouth.
Mycorrhizal fungi form a mutualistic relationship with the root part of a plant and is denoted as option C.
<h3>What is Mutualism?</h3>
This is defined as ecological interaction between two or more species in which each species benefit.
An example is between land plants relying on mycorrhizal fungi for phosphorus, while the fungus receives nutrients formed by the plant in return.
Read more about Mutualism here brainly.com/question/94753
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It does not require institutions to offer<span> identical </span>sports<span> but an </span>equal opportunity<span> to play.</span>