<span>The oldest known vascular plants in the northern hemisphere are Devonian
This is true</span>
Sound cannot travel through a vacuum. A vacuum is an area without any air, like space. So sound cannot travel through space because there is no matter for the vibrations to work in.
Polysaccharide complex sugars
Sugar and phosphate energy source
Electron sharing ionic bonding
In order to survive, all the cells in your body need energy. ... To provide this energy, your cells must break down the glucose in your food during a process called glycolysis and convert it into pyruvate<span>, sometimes called pyruvic acid, and the molecule that feeds the Krebs cycle, our second step in </span>cellular respiration<span>.</span>
