Answer:
True
Explanation:
The reactants of photosynthesis are carbon dioxide and water, meaning during photosynthesis carbon dioxide and water are taken in to create energy. The reactants of cellular respiration are glucose (sugar) and oxygen, these are taken in by animals and humans to produce energy.
 
        
             
        
        
        
Answer:
78 percent
Explanation:
The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. 
 
        
             
        
        
        
Answer:
The alkali metals lithium, sodium, potassium, rubidium, cesium, and francium constitute group 1 of the periodic table. Although hydrogen is in group 1 (and also in group 17), it is a nonmetal and deserves separate consideration later in this chapter.
Elements: Francium; Lithium; Potassium; Rubidium...
Explanation:
 
        
             
        
        
        
Silent mutation and point mutation, the third C was turned into a G (point mutation) but this did not affect the amino acid it was supposed to code for (silent mutation)