True or false? the outermost electrons in a metal atom are free to move throughout the whole structure of the metal?

Match term definition ellipse a) diagonal cross section of a cylinder circle b) diagonal cross section through the widest part of a sphere sphere c) cross section parallel to the base of a cone great circle d) shape created when a semi-circle is rotated around the y-axis triangle e) perpendicular cross section of a cone

What type of electromagnetic radiation has a shorter wavelength than blue light

How have the greenhouse gasses increased from the year 2000 to 2018