Write the symbol for the ion of each element. classify the ion as an anion or a cation, and name the ion.

What method(s) do plants use to obtain nitrogen? select all that apply. absorb it from the atmosphere use bacteria to convert nitrogen to usable form obtain usable nitrogen compounds from the soil absorb nitrogen from water taken in at the roots

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?

In 2002, the rare earth elements mine in mountain pass, california was closed because