Mycorrhizza association is what type of association

Mycorrhizas are symbiotic associations essential for one or both partners, between a fungus

Mutualism

Explanation:

To be specific, you can say it's Facilitative Mutualism. Mycorrhizza grows on the roots of the plant, it helps the plant to gain a wider surface area for water and nutrients absorption, while the Mycorrhizza get some sugar that the plant produces via Photosynthesis. So, they usually are good pals.

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a.) a destruction fo cells by viral reproduction

yes its like the dead sea which is full of salt which makes you stay afloat

so yes an egg will float in salt