Megan left her bicycle outside on the patio while she went on vacation for several weeks. when she returned, megan discovered a reddish substance, rust, on the handlebars of her bicycle. the rust is an example of a(n)

The answer is Rust is and example of a chemical compound

Explanation:

Rust (Oxide) is a reddish layer that forms on the surface of iron and other metals because of oxidation caused by moisture or water. Oxide is an inorganic compound that is formed by joining some chemical element with oxygen, that is, an oxide is a chemical compound, formed by at least one oxygen atom and one atom of some other element.

weather forecasts are done by collecting data about the current state of the atmosphere mainly the temperature, humidity and wind and using meteorology, to determine the atmosphere that evolves over time. the h and l mean the high and low pressure. the red strip is a warm front. the blue strip is a cold front. the blue and red strip is a stationary front. the purple strip is a occluded front.

explanation:

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it