What happens during rusting of an iron nail? Sulfur, iron, and oxygen combine to form iron sulfoxide.

Iron and oxygen combine to form iron oxide.

Iron and sulfur combine to form iron sulfide.

Sulfur and oxygen combine to form a sulfur dioxide coating.

The last one. I searched it on goggle

they each offer a fresh glut of resources to the organisms that can arrive and exploit them. as individuals and new species continue to appear, they actively and passively alter the environment. competition for shared resources increases, local abiotic and biotic conditions shift, and the relative abundances of species change accordingly. the process is called ecological succession, and it is one of the earliest and most well-known concepts in ecology.

when a reversible reaction is occurring in both directions at the same rate; the products and reactants do not change in concentration. a chemical reaction where the compound is broken into its constituent parts.

explanation:

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