NEED HELP URGENTLY Which of the two blood vessels carries higher levels of oxygen and which blood vessel carries higher levels of carbon dioxide?

(Pulmonary & Systemic)

18. how do the cells in meiosis differ from the cells in mitosis?

What are the three different shapes, or structures, of carbon-based molecules

Use the drop-down menus to match each part of the scenario to the correct scientific practice. akira records the speed of a reaction without a catalyst and then with a catalyst. akira creates a reaction without a catalyst and repeats the reaction with a catalyst. akira turns in a written lab report to his science teacher. akira wonders, "will adding a catalyst speed up this chemical reaction? " akira writes in his notes that adding a catalyst sped up the chemical reaction because the catalyst lowers the activation energy needed to get the reaction started.