III. Direction: 1-22 WRITE the LETTER of the best answer on the SPACE PROVIDED before the number

1. What must be provided to keep the organisms alive for the longest possible time? a carbon dioxide b light energy C nitrates d. oxygen

2. What structure of plant cell is shown below? a. chloroplast b. cuticle c. parenchyma d. stomata

3. How does photosynthesis benefit heterotrophs? a it adds carbon dioxide to the air bit creates clean water cit creates food that they can eat dit eliminates harmful sugars​