Which of these statements are true about scientific theories and hypothesis

Although there are a limited number of amino acids many different types of proteins exist because..

Which statement describes the reaction for cellular respiration? the equation is carbon dioxide + water → glucose + oxygen + water and energy is required in the form of light the equation is glucose + oxygen → carbon dioxide + water and energy is produced in the form of atp. the equation is carbon dioxide + water → glucose + oxygen + water and energy is produced in the form of atp. the equation is glucose + exygen carbon dioxide + water and energy is required in the form of light.

How can you approximate the number of calories required to keep you in energy balance?