In the 1940s, many scientists were convinced that a protein was the genetic material. Refute this claim using the
experiments in the experiments in this lesson

altitude, density, pressure

air gets less dense the higher the altitude and also the air pressure is less as altitude rises.

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."

no but i do not usually comment or use my voice that much when it comes to social media