The black rods in this image are single-celled organisms found in a pond. Which scientist was the most likely to observe this organism under the microscope first?

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

In apex! a liquid heated beyond a certain temperature becomes

The element that has the greatest electronegativity is