Read the following text carefully:

"The process of photosynthesis is essential for life on Earth. It begins when sunlight is absorbed by chlorophyll in plant cells. This energy is used to convert carbon dioxide and water into glucose and oxygen. The glucose produced provides food for the plant, and the oxygen released is crucial for the survival of other organisms. In addition to plants, algae and some bacteria also perform photosynthesis. Without this process, life as we know it could not exist because the Earth's atmosphere would lack oxygen."

Task:

1. Identify the passive voice sentences in the text above. Write them below:
   a. __________________________________________________________
   b. __________________________________________________________
   c. __________________________________________________________
2. Convert the following active sentences into passive voice:
   a. Chlorophyll absorbs sunlight.
   b. Plants convert carbon dioxide into glucose.
   c. Photosynthesis provides oxygen.
   d. The roots absorb water.
   e. The plant produces energy.
   f. Scientists study photosynthesis.
   g. The sun gives energy to plants.
   h. Bacteria perform photosynthesis.
   i. Leaves release oxygen.
   j. Cells store glucose.