Parenchymal density: is a very nonspecific term, unfortunately. It could mean anything from scar to mass to pneumonia to collapse of a small lung segment. Without the images to review, it is difficult to determine. Likewise, there are both acute and chronic causes of cystic changes.
Photosynthesis is the process where plants make their own food from sunlight. Most plants are able to make food directly from light energy, for example the Sun, instead of eating other organisms or relying on nutrients. Photosynthesis can happen in plants because they have chlorophyll.Chlorophyll is the pigment that makes plants green. Chlorophyll captures the Sunâs energy and uses it to make sugars out of carbon dioxide from the air and water. The sugars fuel a plant's roots, stems, and leaves so the plant can grow.After plants use the Sun's light to make their food, plants release oxygen into the air. This oxygen is very helpful because humans and animals need it to breathe.he sugars fuel a plant's roots, stems, and leaves so the plant can grow. After plants use the Sun's light to make their food, plants release oxygen into the air. This oxygen is very helpful because humans and animals need it to breathe.
Only plants with green leaves are capable of photosynthesis because they contain chlorophyll, a pigment that captures the necessary sunlight to split water into hydrogen and oxygen. Oxygen is released to the environment.The hydrogen combines with carbon dioxide to make a simple sugar molecule, glucose.ound This Helpful. Jupiterimages/Comstock/Getty Images. A baby plant uses energy stored in the seed to grow. Once the energy from the seed is all used up, the plant must create its own energy. It uses photosynthesis to trap some of the sun's energy to make sugar from carbon dioxide and water.